Medium severity6.1GHSA Advisory· Published Jul 8, 2026· Updated Aug 19, 2026
CVE-2026-55877
CVE-2026-55877
Description
Symfony UX is a JavaScript ecosystem for Symfony. From 2.17.0 before 2.36.1 and from 3.0.0 before 3.2.0, the ux_icon() Twig function is marked is_safe=['html'] and Icon::toHtml() inlines SVG source verbatim, allowing unsanitized local SVG files or Iconify on-demand JSON body responses containing nested script elements, on* event handlers, or dangerous URL schemes to execute cross-site scripting. This issue is fixed in versions 2.36.1 and 3.2.0.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
symfony/ux-iconsPackagist | >= 2.17.0, < 2.36.1 | 2.36.1 |
symfony/ux-iconsPackagist | >= 3.0.0, < 3.2.0 | 3.2.0 |
Affected products
2>= 3.0.0, < 3.2.0+ 1 more
- (no CPE)range: >= 3.0.0, < 3.2.0
- cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*range: >=2.17.0,<2.36.1
Patches
Vulnerability mechanics
References
6- github.com/symfony/ux/commit/3a4964ec3700f0af4e13f7bfbf8bb3174c3e79d1nvdPatch
- github.com/advisories/GHSA-6v8j-33hc-mv84ghsaADVISORY
- github.com/symfony/ux/security/advisories/GHSA-6v8j-33hc-mv84nvdVendor AdvisoryWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/symfony/ux-icons/CVE-2026-55877.yamlghsaWEB
- github.com/symfony/ux/releases/tag/v2.36.1nvdRelease Notes
- github.com/symfony/ux/releases/tag/v3.2.0nvdRelease Notes
News mentions
0No linked articles in our index yet.