Vulnerability details

CVE-2026-24894

php frankenphp

FrankenPHP leaks session data between requests in worker mode

CVSS 4.0

8.7High

Official description

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.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`

Affected products

Vendor	Product	Versions	Source
php	frankenphp	< 1.11.2	CVEProject cvelistV5 (CNA)

References and advisories

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

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Details

Published: 2026-02-12
Last updated: 2026-02-12
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.49%

Probability of exploitation in 30 days

42.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

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