CWE-287
Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
CVE-2026-47202 (GCVE-0-2026-47202)
Vulnerability from cvelistv5 – Published: 2026-05-26 17:30 – Updated: 2026-05-27 17:23
VLAI
Title
Kavita: Pre-Auth Account Takeover
Summary
Kavita is a cross platform reading server. Prior to 0.9.0.2, an Improper Token validation flaw permits a remote and unauthenticated threat actor to request a JWT for any user including admins given knowledge of their username. This vulnerability is fixed in 0.9.0.2.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Kareadita/Kavita/security/advi… | x_refsource_CONFIRM |
| https://github.com/Kareadita/Kavita/releases/tag/… | x_refsource_MISC |
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CVE-2026-47272 (GCVE-0-2026-47272)
Vulnerability from cvelistv5 – Published: 2026-05-27 20:06 – Updated: 2026-05-28 12:53
VLAI
Title
pam_usb: OTP pad authentication bypass via missing system pad check and uninitialized RNG buffer
Summary
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, the pusb_pad_compare() function in src/pad.c only verified that the user-side pad (~/.pamusb/device.pad) could be read, but did not enforce that the system-side pad (the pad file on the USB device) was also present and readable. If the user-side pad was deleted or unreadable, the function returned a failure that was treated as non-fatal in certain code paths, allowing authentication to succeed without the USB device being verified. A local user can delete their own ~/.pamusb/device.pad to remove the USB device requirement and authenticate without the physical device. This vulnerability is fixed in 0.9.0.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/mcdope/pam_usb/security/adviso… | x_refsource_CONFIRM |
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CVE-2026-47280 (GCVE-0-2026-47280)
Vulnerability from cvelistv5 – Published: 2026-05-22 22:03 – Updated: 2026-06-05 16:38 Exclusively Hosted Service
VLAI
Title
Azure Resource Manager Elevation of Privilege Vulnerability
Summary
Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure Resource Manager |
Affected:
-
|
Date Public
2026-05-21 14:00
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CVE-2026-4829 (GCVE-0-2026-4829)
Vulnerability from cvelistv5 – Published: 2026-04-01 14:44 – Updated: 2026-04-01 19:25
VLAI
Summary
Improper authentication in the external OAuth authentication flow in Devolutions Server 2026.1.11 and earlier allows an authenticated user to authenticate as other users, including administrators, via reuse of a session code from an external authentication flow.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Devolutions | Server |
Affected:
0 , ≤ 2026.1.11
(custom)
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CVE-2026-4831 (GCVE-0-2026-4831)
Vulnerability from cvelistv5 – Published: 2026-03-26 01:02 – Updated: 2026-03-26 14:16
VLAI
Title
kalcaddle kodbox Password-protected Share auth.class.php can improper authentication
Summary
A security flaw has been discovered in kalcaddle kodbox 1.64. Impacted is the function can of the file /workspace/source-code/app/controller/explorer/auth.class.php of the component Password-protected Share Handler. Performing a manipulation results in improper authentication. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.353128 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.353128 | signaturepermissions-required |
| https://vuldb.com/?submit.775502 | third-party-advisory |
| https://vulnplus-note.wetolink.com/share/xdk9igJ3sulk | exploit |
Credits
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CVE-2026-48526 (GCVE-0-2026-48526)
Vulnerability from cvelistv5 – Published: 2026-05-28 15:09 – Updated: 2026-05-29 15:15
VLAI
Title
PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed
Summary
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/jpadilla/pyjwt/security/adviso… | x_refsource_CONFIRM |
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CVE-2026-48896 (GCVE-0-2026-48896)
Vulnerability from cvelistv5 – Published: 2026-05-26 16:45 – Updated: 2026-05-27 09:15
VLAI
Title
Joomla! Core - [20260511] - MFA Authentication Bypass
Summary
Insufficient state checks lead to a vector that allows to bypass 2FA checks.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://developer.joomla.org/security-centre/1043… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Joomla! Project | Joomla! CMS |
Affected:
4.0.0-5.4.5
Affected: 6.0.0-6.1.0 |
Credits
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CVE-2026-48897 (GCVE-0-2026-48897)
Vulnerability from cvelistv5 – Published: 2026-05-26 16:44 – Updated: 2026-05-27 09:14
VLAI
Title
Joomla! Core - [20260512] - MFA Authentication Bypass
Summary
Insufficient state checks lead to a vector that allows to bypass 2FA checks.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://developer.joomla.org/security-centre/1044… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Joomla! Project | Joomla! CMS |
Affected:
4.0.0-5.4.5
Affected: 6.0.0-6.1.0 |
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CVE-2026-49186 (GCVE-0-2026-49186)
Vulnerability from cvelistv5 – Published: 2026-06-04 03:36 – Updated: 2026-06-04 12:37
VLAI
Title
Lack of MQTT Broker Topic Access Control Lists
Summary
The local MQTT broker does not enforce topic-level Access Control Lists (ACLs). This allows any client to subscribe using wildcard characters (# or +) to enumerate hidden network devices or publish rogue control commands.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Acer | Connect M6E 5G Portable WiFi Router |
Affected:
* , ≤ M6E_AI_1.00.000019
(custom)
|
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CVE-2026-49191 (GCVE-0-2026-49191)
Vulnerability from cvelistv5 – Published: 2026-06-04 05:36 – Updated: 2026-06-04 12:40
VLAI
Title
Exposed Hard-coded M3WebServer Backend API Key
Summary
The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Acer | Connect M6E 5G Portable WiFi Router |
Affected:
* , ≤ M6E_AI_1.00.000019
(custom)
|
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"credits": [
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{
"base64": false,
"type": "text/html",
"value": "The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages."
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"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
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"orgId": "8fc372e3-d9c5-46e4-9410-38469745c639",
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"references": [
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"source": {
"discovery": "UNKNOWN"
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"title": "Exposed Hard-coded M3WebServer Backend API Key",
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"cveId": "CVE-2026-49191",
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"dateReserved": "2026-05-28T02:46:15.561Z",
"dateUpdated": "2026-06-04T12:40:48.143Z",
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Mitigation
Phase: Architecture and Design
Strategy: Libraries or Frameworks
Description:
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
CAPEC-114: Authentication Abuse
An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.
CAPEC-115: Authentication Bypass
An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.
CAPEC-151: Identity Spoofing
Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.
CAPEC-194: Fake the Source of Data
An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.
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-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.
CAPEC-593: Session Hijacking
This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.
CAPEC-633: Token Impersonation
An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.
CAPEC-650: Upload a Web Shell to a Web Server
By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.
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.