CVE-2026-122233
lowFrankenPHP before 1.13.4 contains an information disclosure vulnerability in worker mode that fails to clear last HTTP stream response headers between requests…
FrankenPHP before 1.13.4 contains an information disclosure vulnerability in worker mode that fails to clear last HTTP stream response headers between requests, because the reset only happens in RSHUTDOWN, which worker requests skip. Later requests calling http_get_last_response_headers() can read headers fetched by earlier requests on the same worker thread, exposing other users' Set-Cookie or token headers from backend APIs.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/php/frankenphp/commit/3fade63bb1c1d246926ed8a00520015f94cdc819 disclosure@vulncheck.com
- https://github.com/php/frankenphp/releases/tag/v1.13.4 disclosure@vulncheck.com
- https://github.com/php/frankenphp/security/advisories/GHSA-pmvg-8483-mw84 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/frankenphp-before-1.13.4-cross-request-response-heade... disclosure@vulncheck.com