CVE-2026-49981
High
Description
Twig is a template language for PHP. Prior to 3.27.0, the per-template filter, tag, and function allow-list verdict is computed when a Template instance is constructed and can remain cached after sandbox state changes between renders, allowing a later sandboxed render to reuse a template that was originally checked with a different or empty policy. This issue is fixed in version 3.27.0.
SeverityHigh
CVSS8.2
Exploit probability—
Product
Symfony Twig
PublishedJul 14, 2026
First seenJul 14, 2026
Weakness typeCWE-693CWE-693CWE-863Incorrect authorization
How to fix
Update
- symfony twig3.27.0 or later
- twig/twig3.27.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| symfony twig | v < 3.27.0 | 3.27.0 |
| twig/twigPackagist | v < 3.27.0 | 3.27.0 |
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