Skip to main content

CWE-308

Use of Single-factor Authentication

13 CVEs Avg CVSS 7.0 MITRE
2
CRITICAL
6
HIGH
4
MEDIUM
1
LOW
1
POC
0
KEV

Monthly

CVE-2026-58240 Sep 08, 00:10 CRITICAL CERT-EU NEWS Act Now

Component-registration authentication bypass in the SAP NetWeaver Message Server allows an unauthenticated attacker with network access to register a rogue application server component into an SAP system landscape. Because the Message Server does not verify the authenticity of internal application server components during registration (CWE-308), a fraudulent component can be introduced to intercept traffic, manipulate application logic, or disrupt service, yielding full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis; the fix is delivered through SAP Security Note 3759472 in the SAP Security Patch Day cycle.

Authentication Bypass SAP Sap Se Sap Netweaver Message Server
NVD
CVSS 3.1
9.8
EPSS
0.3%
CVE-2026-85590 Sep 04, 11:29 HIGH PATCH This Week

phpMyFAQ before 4.1.8 allows an authenticated attacker who has hijacked a user's session to silently strip two-factor authentication (TOTP) protection from any account, including administrator accounts, by calling either POST /api/user/remove-twofactor or PUT /api/user/data/update with only a valid session cookie and CSRF token - no password re-entry or current TOTP code is required. The root cause is CWE-308: the application guards a security-downgrade operation with single-factor controls (session identity plus CSRF) rather than requiring the second factor whose removal is being requested. After TOTP is disabled, the targeted account becomes accessible via password-only authentication, negating the deployment's MFA posture. No public exploit code or CISA KEV listing has been identified at time of analysis.

Authentication Bypass CSRF Phpmyfaq Thorsten
NVD GitHub
CVSS 4.0
7.1
EPSS
0.4%
CVE-2026-67611 Aug 03, 16:04 HIGH POC This Week

OpenEMR through 8.2.0 exposes an OAuth2 password grant pathway that fully bypasses multi-factor authentication for any user with valid credentials, because the unauthenticated dynamic client registration endpoint allows an attacker to mint a first-party OAuth2 client and exchange legitimate credentials for an API access token without triggering the MFA challenge enforced on the normal web login interface. Any organization using OpenEMR's MFA controls to protect sensitive patient health information (PHI) is exposed: the control is structurally bypassed at the OAuth2 layer regardless of how MFA is configured in the web UI. A detailed public proof-of-concept writeup from JivaSecurity documents the full exploit flow, confirmed by VulnCheck advisory; no KEV listing has been observed at time of analysis.

Authentication Bypass Microsoft Openemr
NVD VulDB
CVSS 4.0
8.6
EPSS
0.3%
CVE-2026-15616 Jul 23, 16:17 CRITICAL Act Now

Remote attackers can bypass locally configured multi-factor authentication (MFA) in Logto when users authenticate via Single Sign-On (SSO). Affecting Logto versions 1.19.0 through 1.37.1, the flaw allows an attacker with valid SSO credentials to access user accounts without providing a second factor, leading to unauthorized data access and account manipulation. No public exploit is known, and EPSS indicates low exploitation probability (0.19%).

Authentication Bypass
NVD GitHub
CVSS 3.1
9.1
EPSS
0.2%
CVE-2026-45749 Jun 05, 18:05 HIGH PATCH This Week

Authentication bypass of MFA in Termix versions prior to 2.3.2 allows an attacker who already holds a victim's account password to disable TOTP or regenerate backup codes via the POST /users/totp/disable and POST /users/totp/backup-codes endpoints, completely neutralizing the second factor. The flaw stems from these MFA-critical endpoints accepting the account password as the sole authentication factor, meaning credential stuffing, phishing, or a leaked password hash (referenced as GHSA-xxxx) is sufficient to defeat 2FA. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Information Disclosure Termix Termix Ssh
NVD GitHub
CVSS 3.1
8.1
EPSS
0.1%
CVE-2026-56022 Jun 18, 16:11 MEDIUM PATCH This Month

MFA bypass in Webmin prior to 2.641 enables remote attackers holding valid credentials to circumvent multi-factor authentication entirely by supplying the literal string 'webmin' as the HTTP User-Agent header, causing the server to accept basic authentication without requiring a session cookie or a second factor. The affected CPE covers all Webmin releases before 2.641, and the impact extends well beyond the low integrity score assigned by the official CVSS - Webmin is a full server administration panel, meaning successful authentication grants control over the underlying host. No public exploit code or CISA KEV listing has been identified at time of analysis; the issue was reported by CISA-CG and patched in the 2.641 release.

Authentication Bypass Webmin
NVD GitHub VulDB
CVSS 4.0
6.9
EPSS
0.3%
CVE-2024-27928 Jun 05, 15:24 PyPI MEDIUM PATCH GHSA This Month

### Impact If an attacker hacks into a vantage6 user's email account, they can 1) reset the password via email and then 2) reset the 2FA token via email. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, low attack complexity.

Information Disclosure
NVD GitHub
CVSS 4.0
5.9
EPSS
0.0%
CVE-2026-33550 Mar 22, 02:16 LOW PATCH Monitor

SOGo versions prior to 5.12.5 contain two related one-time password (OTP) implementation weaknesses: the OTP is not regenerated when users disable and re-enable two-factor authentication, and the OTP length is only 12 digits instead of the cryptographically recommended 20 digits. While the CVSS score is low (2.0) due to high attack complexity and privileges required, this vulnerability could allow authenticated administrators or high-privilege users with social engineering capability to bypass or weaken OTP protections. No known active exploitation or public proof-of-concept exists, but the issue has been acknowledged and patched by the vendor.

Information Disclosure Sogo Alinto
NVD GitHub VulDB
CVSS 3.1
2.0
EPSS
0.0%
CVE-2024-50618 Feb 11, 20:16 MEDIUM This Month

Cipace versions up to 9.17 contains a vulnerability that allows attackers to bypass a protection mechanism (CVSS 4.3).

Authentication Bypass Cipace Cipplanner
NVD
CVSS 3.1
4.3
EPSS
0.0%
CVE-2025-42959 Jul 08, 01:15 HIGH This Week

A security vulnerability in An unauthenticated attacker may exploit a scenario where a (CVSS 8.1). High severity vulnerability requiring prompt remediation.

Information Disclosure
NVD
CVSS 3.1
8.1
EPSS
0.1%
EPSS 0% CVSS 9.8
CRITICAL Act Now

Component-registration authentication bypass in the SAP NetWeaver Message Server allows an unauthenticated attacker with network access to register a rogue application server component into an SAP system landscape. Because the Message Server does not verify the authenticity of internal application server components during registration (CWE-308), a fraudulent component can be introduced to intercept traffic, manipulate application logic, or disrupt service, yielding full confidentiality, integrity, and availability impact. No public exploit identified at time of analysis; the fix is delivered through SAP Security Note 3759472 in the SAP Security Patch Day cycle.

Authentication Bypass SAP Sap Se +1
NVD
EPSS 0% CVSS 7.1
HIGH PATCH This Week

phpMyFAQ before 4.1.8 allows an authenticated attacker who has hijacked a user's session to silently strip two-factor authentication (TOTP) protection from any account, including administrator accounts, by calling either POST /api/user/remove-twofactor or PUT /api/user/data/update with only a valid session cookie and CSRF token - no password re-entry or current TOTP code is required. The root cause is CWE-308: the application guards a security-downgrade operation with single-factor controls (session identity plus CSRF) rather than requiring the second factor whose removal is being requested. After TOTP is disabled, the targeted account becomes accessible via password-only authentication, negating the deployment's MFA posture. No public exploit code or CISA KEV listing has been identified at time of analysis.

Authentication Bypass CSRF Phpmyfaq +1
NVD GitHub
EPSS 0% CVSS 8.6
HIGH POC This Week

OpenEMR through 8.2.0 exposes an OAuth2 password grant pathway that fully bypasses multi-factor authentication for any user with valid credentials, because the unauthenticated dynamic client registration endpoint allows an attacker to mint a first-party OAuth2 client and exchange legitimate credentials for an API access token without triggering the MFA challenge enforced on the normal web login interface. Any organization using OpenEMR's MFA controls to protect sensitive patient health information (PHI) is exposed: the control is structurally bypassed at the OAuth2 layer regardless of how MFA is configured in the web UI. A detailed public proof-of-concept writeup from JivaSecurity documents the full exploit flow, confirmed by VulnCheck advisory; no KEV listing has been observed at time of analysis.

Authentication Bypass Microsoft Openemr
NVD VulDB
EPSS 0% CVSS 9.1
CRITICAL Act Now

Remote attackers can bypass locally configured multi-factor authentication (MFA) in Logto when users authenticate via Single Sign-On (SSO). Affecting Logto versions 1.19.0 through 1.37.1, the flaw allows an attacker with valid SSO credentials to access user accounts without providing a second factor, leading to unauthorized data access and account manipulation. No public exploit is known, and EPSS indicates low exploitation probability (0.19%).

Authentication Bypass
NVD GitHub
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Authentication bypass of MFA in Termix versions prior to 2.3.2 allows an attacker who already holds a victim's account password to disable TOTP or regenerate backup codes via the POST /users/totp/disable and POST /users/totp/backup-codes endpoints, completely neutralizing the second factor. The flaw stems from these MFA-critical endpoints accepting the account password as the sole authentication factor, meaning credential stuffing, phishing, or a leaked password hash (referenced as GHSA-xxxx) is sufficient to defeat 2FA. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

Information Disclosure Termix Termix Ssh
NVD GitHub
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

MFA bypass in Webmin prior to 2.641 enables remote attackers holding valid credentials to circumvent multi-factor authentication entirely by supplying the literal string 'webmin' as the HTTP User-Agent header, causing the server to accept basic authentication without requiring a session cookie or a second factor. The affected CPE covers all Webmin releases before 2.641, and the impact extends well beyond the low integrity score assigned by the official CVSS - Webmin is a full server administration panel, meaning successful authentication grants control over the underlying host. No public exploit code or CISA KEV listing has been identified at time of analysis; the issue was reported by CISA-CG and patched in the 2.641 release.

Authentication Bypass Webmin
NVD GitHub VulDB
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

### Impact If an attacker hacks into a vantage6 user's email account, they can 1) reset the password via email and then 2) reset the 2FA token via email. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, low attack complexity.

Information Disclosure
NVD GitHub
EPSS 0% CVSS 2.0
LOW PATCH Monitor

SOGo versions prior to 5.12.5 contain two related one-time password (OTP) implementation weaknesses: the OTP is not regenerated when users disable and re-enable two-factor authentication, and the OTP length is only 12 digits instead of the cryptographically recommended 20 digits. While the CVSS score is low (2.0) due to high attack complexity and privileges required, this vulnerability could allow authenticated administrators or high-privilege users with social engineering capability to bypass or weaken OTP protections. No known active exploitation or public proof-of-concept exists, but the issue has been acknowledged and patched by the vendor.

Information Disclosure Sogo Alinto
NVD GitHub VulDB
EPSS 0% CVSS 4.3
MEDIUM This Month

Cipace versions up to 9.17 contains a vulnerability that allows attackers to bypass a protection mechanism (CVSS 4.3).

Authentication Bypass Cipace Cipplanner
NVD
EPSS 0% CVSS 8.1
HIGH This Week

A security vulnerability in An unauthenticated attacker may exploit a scenario where a (CVSS 8.1). High severity vulnerability requiring prompt remediation.

Information Disclosure
NVD

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy