What’s Vulnerable › Vulnerabilities

CVE-2024-51996: Symphony has an Authentication Bypass via RememberMe

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-13 · updated 2026-06-17
• Weakness: CWE-287

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

• Symphony Php Framework Symphony Process: through 5.3.0; before 5.4.47; through 6.0.0-BETA1; before 6.4.15; through 7.0.0-BETA1; before 7.1.8 — fixed in 5.4.47, 6.4.15, 7.1.8

How to fix

Upgrade to a fixed version: Symphony Php Framework Symphony Process 5.4.47, 6.4.15, 7.1.8. Check the vendor advisory for mitigations.

References

• https://github.com/symfony/symfony/commit/81354d392c5f0b7a52bcbd729d6f82501e94135a
• https://github.com/symfony/symfony/security/advisories/GHSA-cg23-qf8f-62rr

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