CVE-2026-45072 json
Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering
published 2026-05-27 5 mo ago modified 2026-09-10 1 mo ago also GHSA-hmr5-2xcr-v8pp , EUVD-2026-44366
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 23%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist symfony/symfony 6.4.40, 7.4.12, 8.0.12
- packagist symfony/twig-bridge 6.4.40
- packagist symfony/web-profiler-bundle 7.4.12, 8.0.12
- sensiolabs symfony 6.4.40, 7.4.12, 8.0.12
- symfony Debian 13 6.4.41+dfsg-0+deb13u1
- symfony Debian 14 7.4.12+dfsg-1
debian advisories DEBIAN-CVE-2026-45072
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 2.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| CNA | 4.0 | 2.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | symfony/symfony | >=6.4.24, <6.4.40 >=7.2.9, <7.4.12 >=8.0.0, <8.0.12 |
6.4.40 7.4.12 8.0.12 |
| packagist | symfony/twig-bridge | >=6.4.24, <6.4.40 |
6.4.40 |
| packagist | symfony/web-profiler-bundle | >=7.2.9, <7.4.12 >=8.0.0, <8.0.12 |
7.4.12 8.0.12 |
Affected products
- symfony symfony
- symfony twig-bridge
- symfony web-profiler-bundle
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/symfony/symfony/commit/863aa81c61166f1aa74b7732df316f76113acbdb
web, patch
-
github.com
/symfony/symfony/security/advisories/GHSA-hmr5-2xcr-v8pp
web, patch, vendor-advisory
-
github.com
/symfony/symfony/releases/tag/v6.4.40
release-notes
-
github.com
/symfony/symfony/releases/tag/v7.4.12
release-notes
-
github.com
/symfony/symfony/releases/tag/v8.0.12
release-notes
-
github.com
/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45072.yaml
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/symfony/twig-bridge/CVE-2026-45072.yaml
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/symfony/web-profiler-bundle/CVE-2026-45072.yaml
web
-
github.com
/symfony/symfony
package
-
symfony.com
/cve-2026-45072
web
Sources
- CVE List CVE-2026-45072
- GitHub Advisory GHSA-hmr5-2xcr-v8pp
- NVD CVE-2026-45072
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