CVE-2026-24894Public exploitNetwork attack vector

Cross-request session disclosure via incomplete superglobal reset

Published Feb 12, 2026 · Updated Feb 12, 2026

Session data exposure in FrankenPHP before 1.11.2 allows remote attackers to read another user's session data through worker reuse. The frankenphp_reset_super_globals function leaves $_SESSION in the Zend Engine symbol table after request shutdown, so the next request on that worker inherits its contents. Exposure requires worker mode and application code that reads $_SESSION before session_start(); leaked data can include user identifiers, personal data, or authentication tokens.

CVSS severity8.7
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session data exposure in FrankenPHP before 1.11.2 allows remote attackers to read another user's session data through worker reuse. The frankenphp_reset_super_globals function leaves $_SESSION in the Zend Engine symbol table after request shutdown, so the next request on that worker inherits its contents. Exposure requires worker mode and application code that reads $_SESSION before session_start(); leaked data can include user identifiers, personal data, or authentication tokens.

The record

CVE
CVE-2026-24894
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
The PHP Group
Product
FrankenPHP
Classifications
CWE-384, CWE-613, CWE-269, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.11.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The PHP Group · FrankenPHPversion=< 1.11.2

Published CVSS scores

7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-384Session Fixation
CWE-613Insufficient Session Expiration
CWE-269Improper Privilege Management
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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