CVE-2024-51996
highpriority · track · 10EPSS 0.006 · 49 %ileexploit · PoCEURUUSEPSS · scored 2026-10-27
Symphony process is a module for the Symphony PHP framework which executes commands in sub-processes. When consuming a persisted remember-me cookie, Symfony does not check if the username persisted in the database matches the username attached with the cookie, leading to authentication bypass. This vulnerability is fixed in 5.4.47, 6.4.15, and 7.1.8.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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exploits (1)
Public proof-of-concept and weaponised exploit code.
affected products (10)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-cg23-qf8f-62rrSymfony has an Authentication Bypass via RememberMe2024-11-13ghsa · osvUS
### Description When consuming a persisted remember-me cookie, Symfony does not check if the username persisted in the database matches the username attached with the cookie, leading to authentication bypass. ### Resolution The `PersistentRememberMeHandler` class now ensures the submitted username is the cookie owner. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/81354d392c5f0b7a52bcbd729d6f82501e94135a) for branch 5.4. ### Credits We would like to thank Moritz Rauch - Pentryx AG for reporting the issue and Jérémy Derussé for providing the fix.
also known as (4)
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sources
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references (8)
External citations — patches, advisories, analysis.
- https://github.com/symfony/symfony/commit/81354d392c5f0b7a52bcbd729d6f82501e94135acnnvd
- https://github.com/symfony/symfony/security/advisories/GHSA-cg23-qf8f-62rrcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2024-51996cnnvd
- https://vigilance.fr/vulnerability/Symfony-user-access-via-Persisted-Remember-me-Cookie-45635cnnvd
- https://github.com/symfony/symfony/commit/81354d392c5f0b7a52bcbd729d6f82501e94135aenisa_euvd
- https://github.com/symfony/symfony/security/advisories/GHSA-cg23-qf8f-62rrenisa_euvd
- https://github.com/symfony/symfony/commit/81354d392c5f0b7a52bcbd729d6f82501e94135anvd
- https://github.com/symfony/symfony/security/advisories/GHSA-cg23-qf8f-62rrnvd
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