CVE-2024-51996

Symphony has an Authentication Bypass via RememberMe

HIGH

7.5

CVSS Score

Published: November 13, 2024 at 04:18 PM UTC

Updated: June 17, 2026 at 08:06 AM UTC

2 products affected across 2 vendorsSymfonySymphony Process

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Symfony · Symfonycomposer

60%

v < 5.4.47v < 6.4.15v < 7.1.8

Affected range stops below 5.4.47, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.4.15, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.1.8, so it looks safe — our inference, not a vendor statement

Symphony Process · Symphony PHP Framework

60%

v ≤ 5.3.0v ≤ 6.0.0-BETA1v ≤ 7.0.0-BETA1v < 5.4.47v < 6.4.15v < 7.1.8

Affected range stops below 5.4.47, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.4.15, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.1.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISC

Source: [email protected]

https://github.com/symfony/symfony/commit/81354d392c5f0b7a52bcbd729d6f82501e94135a

x_refsource_CONFIRM

Source: [email protected]

https://github.com/symfony/symfony/security/advisories/GHSA-cg23-qf8f-62rr

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-287CWE-289

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