Twig Path Traversal vulnerability in the filesystem loader
Twig is affected by path traversal vulnerability when used with Twig_Loader_Filesystem for loading Twig templates but only if the application is using non-trusted template names (names provided by a end-user for instance).
When affected, it is possible to go up one directory for the paths configured in the application's loader.
For instance, if the filesystem loader is configured with /path/to/templates as a path to look for templates, an attacker can force Twig to include a file stored in /path/to by prepending the path with /../ like in {% include "/../somefile_in_path_to" %}
Note that using anything else (like ../somefile, /../../somefile, or ../../somefile) won’t work and the application will return a proper exception.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | twig/twig | >= 1.0.0, < 1.12.3 | 1.12.3 |
References
- https://github.com/fabpot/Twig/commit/3d19a2eed53570776af313593aaeb5ad62cf4980.diff
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/2013-04-08.yaml
- https://github.com/twigphp/Twig
- https://web.archive.org/web/20130511111630/http://blog.twig.sensiolabs.org/post/47461911874/security-release-twig-1-12-3-released
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-22- Platform
- Composer
- Package
twig/twig- Disclosed
- 30.05.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-7cvr-xhm5-x998 - CC BY 4.0
Vulnerability history: twig/twig
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 24
- First → latest
- 02.2022 07.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 8
- Medium 8
- Low 7
Disclosures per year
- 2022: 4
- 2023: 0
- 2024: 4
- 2025: 1
- 2026: 15
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