Description
Twig is a template language for PHP. Prior to 3.26.0, the deprecated spaceless filter is registered as safe for HTML, causing Twig autoescaping to emit attacker-controlled markup unescaped when spaceless is applied to untrusted input. This issue is fixed in version 3.26.0.
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 | 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 | < 3.26.0 | 3.26.0 | GHSA-4j38-f5cw-54h7 |