CVE-2026-24894

Summary

FrankenPHP is a modern application server for PHP. Prior to 1.11.2, when running FrankenPHP in worker mode, the $_SESSION superglobal is not correctly reset between requests. This allows a subsequent request processed by the same worker to access the $_SESSION data of the previous request (potentially belonging to a different user) before session_start() is called. This vulnerability is fixed in 1.11.2.

Affected Software

Weaknesses

• CWE-269: CWE-269: Improper Privilege Management
• CWE-384: CWE-384: Session Fixation
• CWE-613: CWE-613: Insufficient Session Expiration

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/php/frankenphp/security/advisories/GHSA-r3xh-3r3w-47gp
• https://github.com/php/frankenphp/commit/24d6c991a7761b638190eb081deae258143e9735
• https://github.com/php/frankenphp/releases/tag/v1.11.2

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