CVE-2026-128020

EUVD-2026-125082
FrankenPHP before 1.13.2 contains an uncontrolled recursion vulnerability in its PHP-to-Go array converter that fails to detect circular references in PHP arrays. Passing a self-referential array to frankenphp_log() or returning one from a worker callback triggers a fatal Go stack overflow, terminating the entire server process.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 39.28%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
phpfrankenphp
𝑥
< 1.13.2
CNA
Common Weakness Enumeration
References
https://github.com/php/frankenphp/security/advisories/GHSA-ccgp-ch9h-533f
https://www.vulncheck.com/advisories/frankenphp-before-1.13.2-denial-of-service-via-cyclic-array-conversion