Main Vulnerability Database Vulnerabilities #VU133119

Spoofing attack in Symfony - CVE-2026-48760

Published: June 1, 2026

Vulnerability identifier: #VU133119

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-48760

CWE-ID: CWE-451

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the HtmlSanitizer URL parser. A remote attacker can spoof page content.

Symfony
Debian Linux
symfony (Debian package)

Install updates from vendor's website.

Symfony - addressed in versions 6.4.41, 7.4.13, 8.0.13
symfony (Debian package) - update to 6.4.41+dfsg-0+deb13u1