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CVE-2026-24894

PHP Frankenphp privilege escalation

7.5 HIGHPublic exploitEPSS 0.38%
  1. Published12 Feb 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

PHP Frankenphp< 1.11.2

Remediation

Fixed in
PHP Frankenphp≥ 1.11.2

References

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Frequently asked

Is CVE-2026-24894 being actively exploited?

CVE-2026-24894 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.38%.

How severe is CVE-2026-24894?

CVE-2026-24894 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.38% probability of exploitation.

Which products are affected by CVE-2026-24894?

Affected products include PHP Frankenphp.

How do I fix CVE-2026-24894?

Upgrade affected software to a fixed version, for example PHP Frankenphp 1.11.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-24894 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.