Description
Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| twigphp | Twig | < 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 | No fix yet | — |
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 | — |