SEPTEMBER 13, 2026
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Case File

CVE-2026-45074

HIGH · CVSS 8.1 EPSS 0.41% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-14 · Last synced 2026-08-13

CyberRota Analysis

AI-Generated

The vulnerability affects Symfony versions 7.1.0 to 7.4.12 and 8.0.12, specifically in the Cas2Handler component, where an improperly configured trusted hosts setting allows an attacker to exploit a reflected Host header. This can lead to unauthorized authentication, enabling an attacker to impersonate a victim by replaying their ticket against the Symfony application. Organizations using affected Symfony versions should prioritize patching to mitigate the risk of credential theft and unauthorized access.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-45074
Severity
HIGH
CVSS
8.1
EPSS
0.41%

Original NVD 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.

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