CVE-2026-45072

MEDIUM

Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering

Title source: cna
STIX 2.1

Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into <code> elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

References (5)

Core 5

Scores

CVSS v3 5.4
EPSS 0.0023
EPSS Percentile 14.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (7)
sensiolabs/symfony 6.4.24 - 6.4.40
symfony/symfony >= 6.4.24, < 6.4.40
symfony/symfony >= 7.2.9, < 7.4.12
symfony/symfony >= 8.0.0-BETA1, < 8.0.12
symfony/twig-bridge >= 6.4.24, < 6.4.40
symfony/web-profiler-bundle >= 7.2.9, < 7.4.12
symfony/web-profiler-bundle >= 8.0.0-BETA1, < 8.0.12
Published Jul 14, 2026
Tracked Since Jul 15, 2026