FrankenPHP before 1.13.0 contains a denial of service vulnerability in goArray() that allows remote attackers to abort the server process via arrays with null integer-keyed elements. Attackers can send crafted JSON passed to frankenphp_log() or returned from worker callbacks, triggering an unrecovered cgo panic that terminates every vhost and in-flight request.
https://github.com/php/frankenphp/security/advisories/GHSA-4prg-hv4r-g6mv
Published: 2026-11-13
Updated: 2026-11-13
Base Score: 5.4
Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: Medium
Base Score: 8.2
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00492