CVE-2023-46734: Cross-site scripting

November 10, 2023 (updated November 24, 2023)

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in versions 2.0.0, 5.0.0, and 6.0.0 and prior to versions 4.4.51, 5.4.31, and 6.3.8, some Twig filters in CodeExtension use is_safe=html but don’t actually ensure their input is safe. As of versions 4.4.51, 5.4.31, and 6.3.8, Symfony now escapes the output of the affected filters.

References

github.com/symfony/symfony/commit/5d095d5feb1322b16450284a04d6bb48d1198f54
github.com/symfony/symfony/commit/9da9a145ce57e4585031ad4bee37c497353eec7c
github.com/symfony/symfony/security/advisories/GHSA-q847-2q57-wmr3
nvd.nist.gov/vuln/detail/CVE-2023-46734

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