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CVE-2026-24894

FrankenPHP leaks session data between requests in worker mode

Published: Feb 12, 2026Updated: Feb 20, 2026 Sources: CVE List NVD GHSACWE-269
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.4%
Top 72.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-269CWE-384CWE-613

Affected Products

frankenphpphpOSS Libraries
github.com/dunglas/frankenphpGoOSS Libraries
phposs-projectUSOSS Librariesaka php language, pecl, pear
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Defense Evasion
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/php/frankenphp/commit/24d6c991a7761b638190eb081deae258143e9735
github.com
https://github.com/php/frankenphp/releases/tag/v1.11.2
github.com
https://github.com/php/frankenphp/security/advisories/GHSA-r3xh-3r3w-47gp
github.com
and 2 more references View all →

Timeline

Published
Feb 12, 2026
Last Updated
Feb 20, 2026

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