Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`

Description Several filters in the twig/ extras packages are registered with issafe = 'all', which tells Twig's autoescaper to treat their output as safe in every context html, js, css, url, .... The output of these filters is plain text or HTML markup, neither of which is safe in every escaping...

PT-2026-42176

Name of the Vulnerable Software and Affected Versions twig/markdown-extra affected versions not specified twig/cssinliner-extra affected versions not specified Description Several filters in the twig/ extras packages are incorrectly registered with is safe = 'all', which instructs the autoescaper...

HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`

More info at https://symfony.com/cve-2026-46637...