php franken up to 1.11.1 session_start $_SESSION privileges management

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in php franken up to 1.11.1. This affects the function session_start. The manipulation of the argument $_SESSION results in privileges management. This vulnerability was named CVE-2026-24894. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in php franken up to 1.11.1. Affected is the function session_start. The manipulation of the argument $_SESSION with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-24894 since 01/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 1.11.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 24d6c991a7761b638190eb081deae258143e9735 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: franken 1.11.2
Patch: 24d6c991a7761b638190eb081deae258143e9735

Timelineinfo

01/27/2026 CVE reserved
02/12/2026 +16 days Advisory disclosed
02/12/2026 +0 days VulDB entry created
02/21/2026 +9 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-r3xh-3r3w-47gp
Status: Confirmed

CVE: CVE-2026-24894 (🔒)
GCVE (CVE): GCVE-0-2026-24894
GCVE (VulDB): GCVE-100-345798

Entryinfo

Created: 02/12/2026 23:40
Updated: 02/21/2026 10:52
Changes: 02/12/2026 23:40 (73), 02/21/2026 10:52 (12)
Complete: 🔍
Cache ID: 216::103

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