Description
Twig is a template language for PHP. Starting in 1.15.1 and prior to 3.26.0, Compiler::string() does not escape single quotes when a template name from a {% use %} tag is placed inside a PHP single-quoted string literal, allowing a crafted template name to terminate the string and inject arbitrary PHP expressions into the compiled cache file. This issue is fixed in version 3.26.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| twigphp | Twig | >= 1.15.1, < 3.26.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | php-twig | 3.26.0-1 | — |
| Debian 13 | php-twig | 3.27.0-0+deb13u1 | — |
| Debian 12 | php-twig | 3.5.1-1+deb12u3 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | php-twig | No fix yet | — |
| Ubuntu 25.10 | php-twig | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | php-twig | No fix yet | — |
| Ubuntu Pro 24.04 LTS | php-twig | No fix yet | — |
| Ubuntu Pro 22.04 LTS | php-twig | No fix yet | — |
| Ubuntu Pro 20.04 LTS | php-twig | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | twig/twig | >= 1.15.1, < 3.26.0 | 3.26.0 | GHSA-7p85-w9px-jpjp |
References
- https://github.com/twigphp/Twig/security/advisories/GHSA-7p85-w9px-jpjp
- https://github.com/twigphp/Twig/commit/679447fa29083043665482ccf7d64372472621b8
- https://github.com/twigphp/Twig/commit/a2c6db7ea7d2c90923e6708019ec1442526d1c30
- https://github.com/twigphp/Twig/commit/e9ff55f6910832428e48a35b2e0748189ad49ae3
- https://gist.github.com/vladko312/d61b950f168c791db4786b83dc7a81e6
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2026-46633.yaml
- https://github.com/twigphp/Twig/releases/tag/v3.26.0
- https://symfony.com/cve-2026-46633