Is CVE-2026-45074 actively exploited?

No active exploitation of CVE-2026-45074 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45074 be exploited remotely?

Yes. CVE-2026-45074 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45074?

CVE-2026-45074 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-45074

HIGH

CVE-2026-45074

CWE-290Published: July 14, 2026· Updated: Jul 15, 2026

8.1

CVSS v3.1

Official Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 7.1.0 until 7.4.12 and 8.0.12, Cas2Handler builds the CAS service parameter from Request::getSchemeAndHttpHost(), which reflects an attacker-controlled Host header when framework.trusted_hosts is not configured; an attacker controlling another application registered with the same CAS server can replay a victim ticket against the Symfony application and authenticate as the victim. This issue is fixed in versions 7.4.12 and 8.0.12.

NVD Source

Technical Analysis

CVE-2026-45074 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.