CVE WATCH / VULNERABILITY DETAIL
CVE-2026-123339
UNKNOWNCVSS 0NVD feed
Published 6 November 2026 · tracked since 7 November 2026
Description
Improper trust of forwarded headers in RouterListener::onKernelFinishRequest() in Symfony HttpKernel versions prior to 5.4.56, 6.x prior to 6.4.50, 7.x prior to 7.4.23, and 8.x prior to 8.1.11 allows a remote attacker to control the host, scheme, and port of absolute URLs generated for the rest of t
References
- NVD — National Vulnerability Database
- CVE.org record (MITRE)
- CISA Known Exploited Vulnerabilities catalog
Latest tracked vulnerabilities
- CVE-2026-123998 HIGH 8.3
- CVE-2026-119924 HIGH 8.1
- CVE-2026-119923 CRITICAL 9.8
- CVE-2026-108262 MEDIUM 6.5
- CVE-2026-100080
- CVE-2026-89017 HIGH 7.5
- CVE-2026-75598 MEDIUM 6.3
- CVE-2026-123824 MEDIUM 6.3
- CVE-2026-102650 HIGH 7.5
- CVE-2026-85743 HIGH 8.2