Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package symfony (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-SYMFONY-6058067
- published1 Jun 2025
- disclosed10 Nov 2023
Introduced: 10 Nov 2023
CVE-2023-46734 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream symfony package and not the symfony package as distributed by Ubuntu.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2023-46734
- https://github.com/symfony/symfony/commit/5d095d5feb1322b16450284a04d6bb48d1198f54
- https://github.com/symfony/symfony/commit/9da9a145ce57e4585031ad4bee37c497353eec7c
- https://github.com/symfony/symfony/security/advisories/GHSA-q847-2q57-wmr3
- https://lists.debian.org/debian-lts-announce/2023/11/msg00019.html