How severe is CVE-2026-24894?

CVE-2026-24894 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-24894 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24894?

CVE-2026-24894 affects Php Frankenphp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24894?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-24894 have an EU (EUVD) identifier?

Yes. CVE-2026-24894 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6698.

When was CVE-2026-24894 published?

CVE-2026-24894 was published on 2026-02-12 and last updated on 2026-06-17.

CVE-2026-24894

CVE-2026-24894 is a high-severity vulnerability in Php Frankenphp with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6698
Weakness: CWE-269
Affected product: Php Frankenphp
Published: 2026-02-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-24894?: 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.
How severe is CVE-2026-24894?: CVE-2026-24894 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-24894 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24894?: CVE-2026-24894 affects Php Frankenphp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24894?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-24894 have an EU (EUVD) identifier?: Yes. CVE-2026-24894 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6698.
When was CVE-2026-24894 published?: CVE-2026-24894 was published on 2026-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:php:frankenphp:*:*:*:*:*:*:*:*

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