High severity · published Feb 12, 2026
CVE-2026-24894
FrankenPHP leaks session data between requests in worker mode
7.5
CVSS
0.5%
EPSS
No
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
PHP · PHP
< 1.11.2 · source: vendor
FR
Frankenphp · Php
before 1.11.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24894
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24894
Patch
https://github.com/php/frankenphp/commit/24d6c991a7761b638190eb081deae258143e9735
Release Notes
https://github.com/php/frankenphp/releases/tag/v1.11.2
Exploit
https://github.com/php/frankenphp/security/advisories/GHSA-r3xh-3r3w-47gp
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