CVE-2026-33935
MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.72, an unauthenticated attacker can lock out administrator and visitor accounts from password-based authentication by triggering failed login attempts. The application exposes three password verification endpoints, all of which are publicly accessible. All three endpoints share a single file-backed login attempt state stored in `login-attempts.json`. When any endpoint records a failed authentication attempt via `recordFailedAttempt()`, the shared login attempt state is updated, increasing the `failedAttempts` counter and adjusting the associated timestamps and cooldown values. Before verifying a password, each endpoint calls `canAttemptLogin()`. This function checks the shared JSON file to determine whether a cooldown period is active. If the cooldown has not expired, the request is rejected before the password is validated. Because the failed attempt counter and cooldown timer are globally shared, failed authentication attempts against any endpoint affect all other endpoints. An attacker can exploit this by repeatedly sending invalid authentication requests to any of these endpoints, incr
취약점 유형
MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.72, an unauthenticated attacker can lock out administrator and visitor accounts from password-based authentication by triggering failed login attempts. The application exposes three password verification endpoints, all of which are publicly accessible. All three endpoints share a single file-backed login attempt state stored in `login-attempts.json`. When any endpoint records a failed authentication attempt via `recordFailedAttempt()`, the shared login attempt state is updated, increasing the `failedAttempts` counter and adjusting the associated timestamps and cooldown values. Before verifying a password, each endpoint calls `canAttemptLogin()`. This function checks the shared JSON file to determine whether a cooldown period is active. If the cooldown has not expired, the request is rejected before the password is validated. Because the failed attempt counter and cooldown timer are globally shared, failed authentication attempts against any endpoint affect all other endpoints. An attacker can exploit this by repeatedly sending invalid authentication requests to any of these endpoints, incr
영향받는 제품
- franklioxygen mytube
참고 자료
- https://github.com/franklioxygen/MyTube/blob/941035909ee3f96a6f80f38acf70cbc3e66b5098/backend/src/services/loginAttemptService.ts#L13
- https://github.com/franklioxygen/MyTube/commit/4d89b146b16d08f27d8fd3e0a9122b109335deb1
- https://github.com/franklioxygen/MyTube/commit/752bc7f0ac83df8c881e6b6d5dd6f36bb274ee58
- https://github.com/franklioxygen/MyTube/commit/dd7b4a611fcc5b25a569f379be9a503eb413b6aa
- https://github.com/franklioxygen/MyTube/security/advisories/GHSA-6w95-qgc4-5jxf
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