Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| symfony | symfony | >= 5.3.0, < 5.4.47, >= 6.0.0-BETA1, < 6.4.15, >= 7.0.0-BETA1, < 7.1.8 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | symfony | 6.4.15+dfsg-1 | — |
| Debian 13 | symfony | 6.4.15+dfsg-1 | — |
| Debian 12 | symfony | 5.4.23+dfsg-1+deb12u4 | DSA-5813-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | symfony | No fix yet | — |
| Ubuntu 25.10 | symfony | No fix yet | — |
| Ubuntu 22.04 LTS | symfony | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | symfony | 6.4.5+dfsg-3ubuntu3+esm1 | USN-7272-1 |
| Ubuntu Pro 22.04 LTS | symfony | 5.4.4+dfsg-1ubuntu8+esm1 | USN-7272-1 |
| Ubuntu Pro 20.04 LTS | symfony | 4.3.8+dfsg-1ubuntu1+esm2 | USN-7272-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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moften/CVE-2024-51996 ★ 1 · Apr 14, 2025
CVE-2024-51996 es una vulnerabilidad crítica que afecta al componente security-http del framework Symfony.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | symfony/security-http | >= 5.3.0, < 5.4.47 | 5.4.47 | GHSA-cg23-qf8f-62rr |
| Packagist | symfony/security-http | >= 6.0.0-BETA1, < 6.4.15 | 6.4.15 | GHSA-cg23-qf8f-62rr |
| Packagist | symfony/security-http | >= 7.0.0-BETA1, < 7.1.8 | 7.1.8 | GHSA-cg23-qf8f-62rr |
Advisories 2
- USN-7272-1 symfony vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5813-1 symfony - security update Debian Security (DSA / DLA) · Mar 9, 2026