# CVE-2024-51996: Symfony has an Authentication Bypass via RememberMe

Source: https://junglewise.ai/threats/cve-2024-51996-symfony-has-an-authentication-bypass-via-rememberme  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-11-13  
License: CC BY 4.0 with a link back

CVE-2024-51996 · Severity: low · CVSS 3.1 · Published 2024-11-13

Symfony has an Authentication Bypass via RememberMe

Technologies: [symfony/security-http (Packagist)](https://junglewise.ai/threats/technologies/symfony-security-http). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2024-51996 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-51996 being exploited in the wild.

**How severe is CVE-2024-51996?** Low severity, with a CVSS score of 3.1, published 13 November 2024.

**Which products and versions are affected?** symfony/security-http (Packagist) ECOSYSTEM:introduced=5.3.0,fixed=5.4.47.

**Is there a fix for CVE-2024-51996?** Yes. symfony/security-http (Packagist): upgrade to 5.4.47 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2024-51996?** Check whether you run symfony/security-http (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- symfony/security-http (Packagist): upgrade to 5.4.47 or later

  ```sh
  composer require symfony/security-http:^5.4.47
  ```


## Affected products

- symfony/security-http (Packagist) ECOSYSTEM:introduced=5.3.0,fixed=5.4.47

## Identifiers

- CVE-2024-51996
- GHSA-cg23-qf8f-62rr

## Related threats

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- [Symfony authorization bypass via HEAD requests in security attributes](https://junglewise.ai/threats/cve-2026-45075-symfony-authorization-bypass-via-head-requests-in-security)
- [Symfony OidcTokenHandler insufficient JWT claim verification](https://junglewise.ai/threats/cve-2026-45069-symfony-oidctokenhandler-insufficient-jwt-claim-verification)
- [Symfony X509Authenticator authentication bypass via spoofing](https://junglewise.ai/threats/cve-2026-45063-symfony-x509authenticator-authentication-bypass-via-spoofing)
- [Symfony Cas2Handler authentication bypass via Host header spoofing](https://junglewise.ai/threats/cve-2026-45074-symfony-cas2handler-authentication-bypass-via-host-header)