high
CVE-2026-47732
Twig: Sandbox: multiple `__toString()` policy bypasses via unguarded string coercion points
Impact
Twig is a template language for PHP. Prior to 3.26.0, several Twig language constructs trigger PHP string coercion on a Stringable operand without consulting SecurityPolicy::checkMethodAllowed(), allowing a sandboxed template author to invoke __toString() on objects reachable in the render context through conditional expressions, comparison operators, tests, template-loading tags, dynamic attribute names, spread arguments, the do tag, and the .. range operator. This issue is fixed in version 3.26.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | twig/twig | <= 3.25.0 | 3.26.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Symfony | Twig | before 3.26.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pr2w-4gpj-cpq4
- https://github.com/twigphp/Twig/security/advisories/GHSA-pr2w-4gpj-cpq4
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-47732.yaml
- https://github.com/twigphp/Twig/releases/tag/v3.26.0
- https://symfony.com/cve-2026-47732
- https://github.com/twigphp/Twig/commit/447d0b2331e01b8fc6e08119ac984e1ef50caef9