PHP
CVE-2026-24894
HIGH
GHSA-r3xh-3r3w-47gp
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from GitHub Advisory.
CVSS VectorGitHub Advisory
Lifecycle Timeline
4DescriptionGitHub Advisory
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.
AnalysisAI
FrankenPHP versions prior to 1.11.2 fail to properly isolate session data between worker requests, enabling cross-user session fixation where an attacker can read sensitive $_SESSION information intended for other users. This high-severity flaw affects multi-request worker mode deployments and has public exploit code available. A patched version 1.11.2 is available and should be deployed immediately.
Technical ContextAI
Classified as CWE-269 (Improper Privilege Management). Affects Frankenphp. 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.
RemediationAI
A vendor patch is available — apply it immediately. Fixed in version 1.11.2.. Restrict network access to the affected service where possible.
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
View allVendor StatusVendor
SUSE
Severity: High| Product | Status |
|---|---|
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.5 | Fixed |
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External POC / Exploit Code
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