CWE-303

Incorrect Implementation of Authentication Algorithm

23 CVEs Avg CVSS 7.5 MITRE
6
CRITICAL
5
HIGH
11
MEDIUM
0
LOW
6
POC
0
KEV

Monthly

CVE-2026-27656 MEDIUM PATCH This Month

Mattermost fails to properly validate user identity in OpenID Connect authentication logic due to an overly permissive substring matching flaw in the IsSameUser() comparison function, allowing attackers with high privileges to take over arbitrary user accounts through the user discovery flow. This affects Mattermost versions 10.11.0-10.11.11, 11.2.0-11.2.3, 11.3.0-11.3.1, and 11.4.0. While the CVSS score of 5.7 is moderate and requires high privilege access and user interaction, the core impact is account takeover with full account compromise possible.

Information Disclosure
NVD VulDB
CVSS 3.1
5.7
EPSS
0.0%
CVE-2026-32953 MEDIUM PATCH This Month

CVE-2026-32953 is a security vulnerability. Remediation should follow standard vulnerability management procedures. Vendor patch is available.

RCE Debian
NVD GitHub VulDB
EPSS
0.0%
CVE-2026-29515 Monitor

embedded SwiFTP FTP server component contains a vulnerability that allows attackers to log in without valid credentials.

Authentication Bypass
NVD GitHub
EPSS
0.1%
CVE-2026-28446 CRITICAL POC PATCH Act Now

Auth bypass in OpenClaw voice-call extension before 2026.2.1. EPSS 0.68%. PoC and patch available.

Authentication Bypass AI / ML Openclaw
NVD GitHub
CVSS 3.1
9.4
EPSS
0.7%
CVE-2019-25436 MEDIUM POC This Month

Deviceviewer versions up to 3.12.0.1 contains a vulnerability that allows attackers to change passwords without proper validation of the old password field (CVSS 6.5).

Authentication Bypass Deviceviewer
NVD Exploit-DB
CVSS 3.1
6.5
EPSS
0.0%
CVE-2026-0999 MEDIUM PATCH This Month

Mattermost Server versions 11.1.x through 11.1.2, 10.11.x through 10.11.9, and 11.2.x through 11.2.1 inadequately enforce login method restrictions, permitting authenticated users to circumvent SSO-only requirements by authenticating with a userID instead. This allows an attacker with valid credentials to gain unauthorized access to accounts restricted to single sign-on authentication. No patch is currently available for this vulnerability.

Authentication Bypass Mattermost Server Suse
NVD
CVSS 3.1
5.4
EPSS
0.0%
CVE-2025-14510 HIGH This Week

Incorrect Implementation of Authentication Algorithm vulnerability in ABB ABB Ability OPTIMAX.This issue affects ABB Ability OPTIMAX: 6.1, 6.2, from 6.3.0 before 6.3.1-251120, from 6.4.0 before 6.4.1-251120. [CVSS 8.1 HIGH]

Information Disclosure
NVD
CVSS 3.1
8.1
EPSS
0.0%
CVE-2025-4676 HIGH This Week

Incorrect Implementation of Authentication Algorithm vulnerability in ABB WebPro SNMP Card PowerValue, ABB WebPro SNMP Card PowerValue UL.This issue affects WebPro SNMP Card PowerValue: through 1.1.8.K; WebPro SNMP Card PowerValue UL: through 1.1.8.K. [CVSS 8.8 HIGH]

Snmp
NVD
CVSS 3.1
8.8
EPSS
0.0%
CVE-2025-66489 CRITICAL POC Act Now

A remote code execution vulnerability in Cal.com (CVSS 9.8) that allows an attacker. Risk factors: public PoC available.

Authentication Bypass Cal.Com
NVD GitHub
CVSS 3.1
9.8
EPSS
0.1%
CVE-2025-13390 CRITICAL POC PATCH Act Now

The WP Directory Kit plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.4.4 due to incorrect implementation of the authentication algorithm in the "wdk_generate_auto_login_link" function. This is due to the feature using a cryptographically weak token generation mechanism. This makes it possible for unauthenticated attackers to gain administrative access and achieve full site takeover via the auto-login endpoint with a predictable token.

Authentication Bypass WordPress Wp Directory Kit PHP
NVD GitHub
CVSS 3.1
10.0
EPSS
0.7%
CVE-2026-27656
EPSS 0% CVSS 5.7
MEDIUM PATCH This Month

Mattermost fails to properly validate user identity in OpenID Connect authentication logic due to an overly permissive substring matching flaw in the IsSameUser() comparison function, allowing attackers with high privileges to take over arbitrary user accounts through the user discovery flow. This affects Mattermost versions 10.11.0-10.11.11, 11.2.0-11.2.3, 11.3.0-11.3.1, and 11.4.0. While the CVSS score of 5.7 is moderate and requires high privilege access and user interaction, the core impact is account takeover with full account compromise possible.

Information Disclosure
NVD VulDB
CVE-2026-32953
EPSS 0%
MEDIUM PATCH This Month

CVE-2026-32953 is a security vulnerability. Remediation should follow standard vulnerability management procedures. Vendor patch is available.

RCE Debian
NVD GitHub VulDB
CVE-2026-29515
EPSS 0%
Monitor

embedded SwiFTP FTP server component contains a vulnerability that allows attackers to log in without valid credentials.

Authentication Bypass
NVD GitHub
CVE-2026-28446
EPSS 1% CVSS 9.4
CRITICAL POC PATCH Act Now

Auth bypass in OpenClaw voice-call extension before 2026.2.1. EPSS 0.68%. PoC and patch available.

Authentication Bypass AI / ML Openclaw
NVD GitHub
CVE-2019-25436
EPSS 0% CVSS 6.5
MEDIUM POC This Month

Deviceviewer versions up to 3.12.0.1 contains a vulnerability that allows attackers to change passwords without proper validation of the old password field (CVSS 6.5).

Authentication Bypass Deviceviewer
NVD Exploit-DB
CVE-2026-0999
EPSS 0% CVSS 5.4
MEDIUM PATCH This Month

Mattermost Server versions 11.1.x through 11.1.2, 10.11.x through 10.11.9, and 11.2.x through 11.2.1 inadequately enforce login method restrictions, permitting authenticated users to circumvent SSO-only requirements by authenticating with a userID instead. This allows an attacker with valid credentials to gain unauthorized access to accounts restricted to single sign-on authentication. No patch is currently available for this vulnerability.

Authentication Bypass Mattermost Server Suse
NVD
CVE-2025-14510
EPSS 0% CVSS 8.1
HIGH This Week

Incorrect Implementation of Authentication Algorithm vulnerability in ABB ABB Ability OPTIMAX.This issue affects ABB Ability OPTIMAX: 6.1, 6.2, from 6.3.0 before 6.3.1-251120, from 6.4.0 before 6.4.1-251120. [CVSS 8.1 HIGH]

Information Disclosure
NVD
CVE-2025-4676
EPSS 0% CVSS 8.8
HIGH This Week

Incorrect Implementation of Authentication Algorithm vulnerability in ABB WebPro SNMP Card PowerValue, ABB WebPro SNMP Card PowerValue UL.This issue affects WebPro SNMP Card PowerValue: through 1.1.8.K; WebPro SNMP Card PowerValue UL: through 1.1.8.K. [CVSS 8.8 HIGH]

Snmp
NVD
CVE-2025-66489
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

A remote code execution vulnerability in Cal.com (CVSS 9.8) that allows an attacker. Risk factors: public PoC available.

Authentication Bypass Cal.Com
NVD GitHub
CVE-2025-13390
EPSS 1% CVSS 10.0
CRITICAL POC PATCH Act Now

The WP Directory Kit plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.4.4 due to incorrect implementation of the authentication algorithm in the "wdk_generate_auto_login_link" function. This is due to the feature using a cryptographically weak token generation mechanism. This makes it possible for unauthenticated attackers to gain administrative access and achieve full site takeover via the auto-login endpoint with a predictable token.

Authentication Bypass WordPress Wp Directory Kit +1
NVD GitHub

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