Is there a public exploit for CVE-2026-128017?

No public exploit for CVE-2026-128017 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-128017?

CVE-2026-128017 scores CVSS 6.3 (v4.0), rated medium.

What does CVE-2026-128017 affect?

CVE-2026-128017 affects PHP frankenphp.

6.3 Medium

FrankenPHP before 1.13.4 contains a double free vulnerability in worker mode that frees SG(requestinfo).contenttypedup twice when a worker…

CVE-2026-128017

FrankenPHP before 1.13.4 contains a double free vulnerability in worker mode that frees SG(requestinfo).contenttypedup twice when a worker script ends its loop after a non-form POST request. Unauthenticated attackers can send repeated JSON POST requests until the worker loop ends, aborting the whole process when USEZENDALLOC=0 is set.

Assessment

CVSS: 6.3 (v4.0)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 13 November 2026
Last updated: 13 November 2026
Affected: PHP · frankenphp
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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