Common Weakness Enumeration
CWE-290
AllowedAuthentication Bypass by Spoofing
Abstraction: Base · Status: Incomplete
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
1076 vulnerabilities reference this CWE, most recent first.
CVE-2026-84186 (GCVE-0-2026-84186)
Vulnerability from cvelistv5 – Published: 2026-09-07 08:39 – Updated: 2026-09-08 15:02
VLAI
EPSS
VEX
Title
Incorrect access control in PrestaShop
Summary
Vulnerability involving incorrect access control in the Tools::getRemoteAddr() function in PrestaShop, which allows the client’s IP address to be spoofed via the X-Forwarded-For header when the application is running behind a reverse proxy, load balancer or CDN. The application incorrectly processes the IP address string and uses the address controlled by the visitor rather than the one provided by the trusted infrastructure, allowing an unauthenticated remote attacker to cause the application to interpret their connection as originating from an arbitrary IP address. This condition allows IP-based controls, such as the maintenance mode allowlist, to be bypassed, as well as enabling the forgery of security and audit logs and the evasion of third-party mechanisms that rely on the IP address, such as geolocation checks, fraud detection or request throttling.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:02 UTC
CWE
- CWE-290 - Authentication bypass by spoofing
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.incibe.es/en/incibe-cert/notices/avis… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PrestaShop | PrestaShop |
Affected:
0 , < 9.1.5
(custom)
Affected: 0 , < 8.2.8 (custom) cpe:2.3:a:prestashop:prestashop:*:*:*:*:*:*:*:* cpe:2.3:a:prestashop:prestashop:*:*:*:*:*:*:*:* |
Date Public
2026-09-07 08:37
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CVE-2026-82563 (GCVE-0-2026-82563)
Vulnerability from cvelistv5 – Published: 2026-09-09 15:36 – Updated: 2026-09-09 19:13
VLAI
EPSS
VEX
Title
Softish C6 Ear Camera and EarVision Android Application Authentication bypass by spoofing
Summary
An attacker could impersonate the camera and place themselves in a man-in-the-middle or device-emulation position. This permits manipulation of device status responses, observation of application requests, and potential triggering of firmware-update behavior.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 19:13 UTC
CWE
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Softish | EarVision Android application |
Affected:
1.3.1
(custom)
|
|
| Softish | C6 Ear Camera |
Affected:
1.3.1_Code 132
|
Date Public
2026-09-08 17:00
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CVE-2026-82530 (GCVE-0-2026-82530)
Vulnerability from cvelistv5 – Published: 2026-09-09 14:10 – Updated: 2026-09-09 14:30 X_Open Source
VLAI
EPSS
VEX
Title
IP2Location Country Blocker < 2.45.0 Access Control Bypass via X-Real-IP Header
Summary
IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address to bypass page, link, or site-wide access restrictions and access otherwise-blocked resources.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 14:29 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://wordpress.org/plugins/ip2location-country… | release-notes |
| https://www.vulncheck.com/advisories/ip2location-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IP2Location | IP2Location Country Blocker |
Affected:
0 , < 2.45.0
(semver)
|
Date Public
2026-09-02 00:00
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CVE-2026-82228 (GCVE-0-2026-82228)
Vulnerability from cvelistv5 – Published: 2026-08-31 20:30 – Updated: 2026-09-01 18:08
VLAI
EPSS
VEX
Title
WordPress SiteGround Security plugin <= 1.6.6 - 2FA Bypass vulnerability
Summary
Unauthenticated Bypass Vulnerability in SiteGround Security <= 1.6.6 versions.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 18:08 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SiteGround | SiteGround Security |
Affected:
n/a , ≤ 1.6.6
(custom)
|
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CVE-2026-82180 (GCVE-0-2026-82180)
Vulnerability from cvelistv5 – Published: 2026-09-03 13:20 – Updated: 2026-09-03 13:31
VLAI
EPSS
VEX
Summary
In Eclipse Arrowhead versions from 5.0.0 to 5.2.1 when the MQTT API is enabled with the certificate authentication policy, CertificateMqttFilter parses an X.509 certificate that the client sends inside the MQTT message payload (the authentication field of MqttRequestTemplate) and treats its Subject DN as the authenticated identity. The certificate is decoded with CertificateFactory.generateCertificate() but its signature is never verified and its issuer chain is never validated against any trust store. Authorisation is reduced to two string comparisons on attacker-supplied data: the DN-qualifier must equal "sy" or "op", and the cloud-name part of the CN must match the server's. Both values are public (the cloud name is in the server's own TLS certificate). An attacker who can publish to the MQTT broker can therefore mint a self-signed certificate with CN=Sysop.<cloud>.<org>.arrowhead.eu, dnQualifier=op, send it as the authentication field, and be authenticated as the cloud's system operator with isSysOp == true. This passes the downstream ManagementServiceMqttFilter (request.isSysOp() → allowed) and gives full management access over MQTT. The HTTP CertificateFilter is not affected — it reads the certificate from jakarta.servlet.request.X509Certificate, which Tomcat populates only after a successful mTLS handshake against the configured trust store.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:31 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse Arrowhead |
Affected:
5.0.0 , ≤ 5.2.1
(semver)
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CVE-2026-81777 (GCVE-0-2026-81777)
Vulnerability from cvelistv5 – Published: 2026-08-28 09:42 – Updated: 2026-08-28 15:28 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Essential Addons for Elementor plugin <= 6.8.0 - Bypass vulnerability vulnerability
Summary
Authentication Bypass by Spoofing vulnerability in WPDeveloper Essential Addons for Elementor allows Identity Spoofing.
This issue affects Essential Addons for Elementor: from n/a through 6.8.0.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 15:27 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WPDeveloper | Essential Addons for Elementor |
Affected:
n/a , ≤ 6.8.0
(custom)
|
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CVE-2026-80349 (GCVE-0-2026-80349)
Vulnerability from cvelistv5 – Published: 2026-08-26 10:09 – Updated: 2026-08-26 12:54
VLAI
EPSS
VEX
Title
TarsWeb through 3.0.14 Authentication Bypass via Spoofed X-Forwarded-For and uid Parameter
Summary
TarsWeb decides whether a request comes from a trusted local caller using a client-controlled header. app.js sets Koa's proxy option to true without naming which upstream proxies may be trusted and without limiting the number of forwarded hops, so the request address Koa reports is taken from the X-Forwarded-For header supplied by the caller. In midware/ssoMidware.js a single branch covers both the ignored-path list and the ignoreIps allowlist from config/loginConf.js, which contains the loopback address, and that branch assigns the effective account identity from the uid query parameter before falling through to the request without validating any ticket, cookie or password. A request carrying a forged X-Forwarded-For value naming the loopback address and a uid naming an existing account therefore reaches every route the console mounts as that account, including an administrator, with no credential of any kind. Those routes include user and role administration, service configuration, and package upload and deployment. Version 3.0.16 separates the two branches so that a match on the address allowlist assigns the configured default account rather than one named by the caller.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 12:53 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/TarsCloud/TarsWeb | product |
| https://github.com/TarsCloud/TarsWeb/issues/212 | issue-tracking |
| https://github.com/TarsCloud/TarsWeb/blob/v3.0.14… | technical-description |
| https://github.com/TarsCloud/TarsWeb/blob/v3.0.14… | technical-description |
| https://www.vulncheck.com/advisories/tarsweb-thro… | third-party-advisory |
Impacted products
Date Public
2026-08-26 00:00
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CVE-2026-77337 (GCVE-0-2026-77337)
Vulnerability from cvelistv5 – Published: 2026-08-24 21:30 – Updated: 2026-08-25 19:23
VLAI
EPSS
VEX
Title
CakePHP: Potential Authentication bypass with CookieAuthenticator
Summary
CakePHP Authentication is an authentication plugin for CakePHP that can also be used in PSR-7 based applications. Versions before 2.11.2, from 3.0.0 through 3.3.6, and from 4.0.0 through 4.2.0 allow authentication bypass and potential CPU or memory exhaustion when CookieAuthenticator uses unencrypted, forgeable legacy tokens. This issue is fixed in versions 2.11.2, 3.3.7, and 4.2.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 18:32 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/cakephp/authentication/securit… | x_refsource_CONFIRM |
| https://github.com/cakephp/authentication/pull/806 | x_refsource_MISC |
| https://github.com/cakephp/authentication/pull/807 | x_refsource_MISC |
| https://github.com/cakephp/authentication/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cakephp | authentication |
Affected:
< 2.11.2
Affected: >= 3.0.0, < 3.3.7 Affected: >= 4.0.0, < 4.2.1 |
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CVE-2026-76835 (GCVE-0-2026-76835)
Vulnerability from cvelistv5 – Published: 2026-08-24 17:55 – Updated: 2026-08-29 11:47
VLAI
EPSS
VEX
Title
OAuth2 Proxy 7.15.2 through 7.15.4 Authentication Bypass via X-Forwarded-Uri Under the Default Trusted Proxy Set
Summary
OAuth2 Proxy honours a client-supplied X-Forwarded-Uri header when deciding whether a request may skip authentication, because the guard added for CVE-2026-40575 is inert in the default reverse-proxy configuration. GetRequestURI in pkg/requests/util/util.go prefers that header over the real request URI whenever CanTrustForwardedHeaders returns true, and isAllowedPath in oauthproxy.go matches the skip_auth_routes and skip_auth_regex allow list against the resulting path. CanTrustForwardedHeaders in pkg/apis/middleware/scope.go grants that trust when the caller's address is in the trusted proxy set, and buildTrustedProxyNetSet falls back to defaultTrustedProxyIPs, which is 0.0.0.0/0 and ::/0, whenever reverse proxy mode is enabled without trusted_proxy_ip configured. Every client is therefore treated as a trusted proxy. An unauthenticated attacker can request a protected upstream path while setting X-Forwarded-Uri to a value matching an allow-listed route, so the skip-auth decision is made against the spoofed value while the upstream receives the protected path unchanged.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 20:00 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/oauth2-proxy/oauth2-proxy | product |
| https://github.com/oauth2-proxy/oauth2-proxy/issu… | issue-tracking |
| https://github.com/oauth2-proxy/oauth2-proxy/blob… | technical-description |
| https://github.com/oauth2-proxy/oauth2-proxy/secu… | vendor-advisory |
| https://www.vulncheck.com/advisories/oauth2-proxy… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| oauth2-proxy | oauth2-proxy |
Affected:
7.15.2 , ≤ 7.15.4
(semver)
cpe:2.3:a:oauth2_proxy_project:oauth2_proxy:*:*:*:*:*:*:*:* |
Date Public
2026-08-17 00:00
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CVE-2026-76356 (GCVE-0-2026-76356)
Vulnerability from cvelistv5 – Published: 2026-08-19 21:34 – Updated: 2026-08-27 16:24
VLAI
EPSS
VEX
Title
Authentication Bypass through IP Address Spoofing in the Automation Broker in Splunk SOAR
Summary
In Splunk SOAR versions below 8.6.0, an unauthenticated user could spoof the source IP address in a crafted request to an Automation Broker notification endpoint and execute arbitrary code on the Splunk SOAR host. The vulnerability is possible because the Splunk SOAR Automation Broker trusts a client-supplied source IP address header as proof that the request originates from the local system. Successful exploitation can expose all relevant data, affect system integrity, and disrupt service availability. For more information see About Splunk SOAR Automation Broker (https://help.splunk.com/en/splunk-soar/splunk-automation-broker/about-splunk-soar-automation-broker/about-splunk-soar-automation-broker) in the Splunk documentation.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 03:56 UTC
CWE
- CWE-290 - This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Splunk | Splunk SOAR |
Affected:
8.6 , < 8.6.0
(custom)
|
Date Public
2026-08-19 00:00
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No mitigation information available for this CWE.
CAPEC-21: Exploitation of Trusted Identifiers
An adversary guesses, obtains, or "rides" a trusted identifier (e.g. session ID, resource ID, cookie, etc.) to perform authorized actions under the guise of an authenticated user or service.
CAPEC-22: Exploiting Trust in Client
An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
CAPEC-461: Web Services API Signature Forgery Leveraging Hash Function Extension Weakness
An adversary utilizes a hash function extension/padding weakness, to modify the parameters passed to the web service requesting authentication by generating their own call in order to generate a legitimate signature hash (as described in the notes), without knowledge of the secret token sometimes provided by the web service.
CAPEC-473: Signature Spoof
An attacker generates a message or datablock that causes the recipient to believe that the message or datablock was generated and cryptographically signed by an authoritative or reputable source, misleading a victim or victim operating system into performing malicious actions.
CAPEC-476: Signature Spoofing by Misrepresentation
An attacker exploits a weakness in the parsing or display code of the recipient software to generate a data blob containing a supposedly valid signature, but the signer's identity is falsely represented, which can lead to the attacker manipulating the recipient software or its victim user to perform compromising actions.
CAPEC-59: Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
CAPEC-60: Reusing Session IDs (aka Session Replay)
This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.
CAPEC-667: Bluetooth Impersonation AttackS (BIAS)
An adversary disguises the MAC address of their Bluetooth enabled device to one for which there exists an active and trusted connection and authenticates successfully. The adversary can then perform malicious actions on the target Bluetooth device depending on the target’s capabilities.
CAPEC-94: Adversary in the Middle (AiTM)
An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.