EUVD-2026-11681

Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint...

Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint

Summary The OIDC authorization endpoint allows users with a TOTP-pending session password verified, TOTP not yet completed to obtain authorization codes. An attacker who knows a user's password but not their TOTP secret can obtain valid OIDC tokens, completely bypassing the second factor. Details...

Tinyauth 授权问题漏洞

Tinyauth is an authentication and authorization server developed by Stavros personally. Versions of Tinyauth prior to 5.0.3 had vulnerabilities related to authorization. This vulnerability stemmed from the OIDC authorization endpoint, which allowed users with pending TOTP sessions to obtain...

PT-2026-25056

Name of the Vulnerable Software and Affected Versions Tinyauth versions prior to 5.0.3 Description Tinyauth is an authentication and authorization server. The OIDC authorization endpoint allows users with a TOTP-pending session password verified, TOTP not yet completed to obtain authorization...

Improper Authentication

pterodactyl/panel is vulnerable to Improper Authentication. The vulnerability is due to failure to properly invalidate or mark TOTP tokens as used within their validity window, which allows an attacker who intercepts a valid 2FA token to reuse it along with known credentials to bypass two-factor...

CVE-2026-25791

Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.7.0, the DNS C2 listener accepts unauthenticated TOTP bootstrap messages and allocates server-side DNS sessions without validating OTP values, even when EnforceOTP is enabled. Because sessions are stored...

CVE-2026-25791 Sliver has a DNS C2 OTP Bypass Allows Unauthenticated Session Flooding and Denial of Service

Sliver is a command and control framework that uses a custom Wireguard netstack. Prior to 1.7.0, the DNS C2 listener accepts unauthenticated TOTP bootstrap messages and allocates server-side DNS sessions without validating OTP values, even when EnforceOTP is enabled. Because sessions are stored...

Sliver has DNS C2 OTP Bypass that Allows Unauthenticated Session Flooding and Denial of Service

Summary The DNS C2 listener accepts unauthenticated TOTP bootstrap messages and allocates server-side DNS sessions without validating OTP values, even when EnforceOTP is enabled. Because sessions are stored without a cleanup/expiry path in this flow, an unauthenticated remote actor can repeatedly...

PT-2026-6972

Name of the Vulnerable Software and Affected Versions Sliver versions prior to 1.7.0 Description The DNS command and control C2 listener accepts unauthenticated Time-based One-Time Password TOTP bootstrap messages and allocates server-side DNS sessions without validating the OTP values, even when...

CVE-2025-69425

The Ruckus vRIoT IoT Controller firmware versions prior to 3.0.0.0 GA expose a command execution service on TCP port 2004 running with root privileges. Authentication to this service relies on a hardcoded Time-based One-Time Password TOTP secret and an embedded static token. An attacker who...

CVE-2025-69425 Ruckus vRIoT IoT Controller < 3.0.0.0 Hardcoded Tokens RCE

The Ruckus vRIoT IoT Controller firmware versions prior to 3.0.0.0 GA expose a command execution service on TCP port 2004 running with root privileges. Authentication to this service relies on a hardcoded Time-based One-Time Password TOTP secret and an embedded static token. An attacker who...

Insufficient Session Expiration

Overview pterodactyl/panel is a game management panel. Affected versions of this package are vulnerable to Insufficient Session Expiration via the authentication process. An attacker can gain unauthorized access by reusing a valid TOTP token within its validity window after intercepting it. Note:...

PT-2026-1361

Name of the Vulnerable Software and Affected Versions Pterodactyl versions 1.11.11 and below Description Pterodactyl, a game server management panel, has an issue where Time-based One-Time Password TOTP can be reused during its validity window. When a user with two-factor authentication 2FA enabl...

EUVD-2025-201128

Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists due to problematic conditional logic in...

CVE-2025-66489 Cal.com Authentication Bypass via bad TOTP + password checks

Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists due to problematic conditional logic in...

CVE-2025-66489 Cal.com Authentication Bypass via bad TOTP + password checks

Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists due to problematic conditional logic in...

PT-2025-48991

Name of the Vulnerable Software and Affected Versions Cal.com versions prior to 5.9.8 Description Cal.com, an open-source scheduling software, has a flaw in its login credentials provider. This issue allows an attacker to bypass password verification if a TOTP Time-Based One-Time Password code is...

SUSE CVE-2025-64102

Zitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, an attacker can perform an online brute-force attack on OTP, TOTP, and passwords. While Zitadel allows preventing online brute force attacks in scenarios like TOTP, Email OTP, or passwords using a lockout...

CVE-2025-64102

Zitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, an attacker can perform an online brute-force attack on OTP, TOTP, and passwords. While Zitadel allows preventing online brute force attacks in scenarios like TOTP, Email OTP, or passwords using a lockout...

Brute Force

Overview Affected versions of this package are vulnerable to Brute Force via insufficient enforcement of authentication attempt limits in the authentication process. An attacker can gain unauthorized access to user accounts by performing automated brute-force attacks against OTP, TOTP, or passwor...