Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack via the TOTP authentication process. An attacker can bypass authentication controls by reusing a valid TOTP code within its validity window. Remediation Upgrade code.vikunja.io/api/pkg/user to version 2.2.1 or higher...

GO-2026-4805 Vikunja has TOTP Reuse During Validity Window in code.vikunja.io/api

Vikunja has TOTP Reuse During Validity Window in code.vikunja.io/api. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from vulnerability scanners, please suggest...

Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack via the TOTP authentication process. An attacker can bypass authentication controls by reusing a valid TOTP code within its validity window. Remediation Upgrade github.com/go-vikunja/vikunja/pkg/user to version 2.2.1 or...

GHSA-P747-QC5P-773R Vikunja has TOTP Reuse During Validity Window

Summary Any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window. Details The below code is called when a user that has 2FA is authenticating to the application. Once they submit a valid username-password-totp combination, the user gets authenticated...

Vikunja has TOTP Reuse During Validity Window

Summary Any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window. Details The below code is called when a user that has 2FA is authenticating to the application. Once they submit a valid username-password-totp combination, the user gets authenticated...

Vikunja has TOTP Reuse During Validity Window

Any user that has enabled 2FA can have their TOTP reused during the standard 30 second validity window...

PT-2026-26763

Name of the Vulnerable Software and Affected Versions Vikunja affected versions not specified Description A flaw exists where a Time-based One-Time Password TOTP used for successful 2FA authentication can be reused within its 30-second validity window, allowing subsequent authentication attempts...

ApostropheCMS MFA/TOTP Bypass via Incorrect MongoDB Query in Bearer Token Middleware

MFA/TOTP Bypass via Incorrect MongoDB Query in Bearer Token Middleware Summary The bearer token authentication middleware in @apostrophecms/express/index.js lines 386-389 contains an incorrect MongoDB query that allows incomplete login tokens — where the password was verified but TOTP/MFA...

CVE-2026-32729

Runtipi is a personal homeserver orchestrator. Prior to 4.8.1, The Runtipi /api/auth/verify-totp endpoint does not enforce any rate limiting, attempt counting, or account lockout mechanism. An attacker who has obtained a user's valid credentials via phishing, credential stuffing, or data breach c...

CVE-2026-32729 Runtipi has a TOTP two-factor authentication bypass via unrestricted brute-force on `/api/auth/verify-totp`

Runtipi is a personal homeserver orchestrator. Prior to 4.8.1, The Runtipi /api/auth/verify-totp endpoint does not enforce any rate limiting, attempt counting, or account lockout mechanism. An attacker who has obtained a user's valid credentials via phishing, credential stuffing, or data breach c...

CVE-2026-32246 Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint

Tinyauth is an authentication and authorization server. Prior to 5.0.3, 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...

CVE-2026-32246

Tinyauth is an authentication and authorization server. Prior to 5.0.3, 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...

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...

EUVD-2026-11681

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

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...

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...

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...