Symfony UX: XSS in symfony/ux-icons via unsanitized SVG content in local files and Iconify on-demand responses (symfony ux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.34 % · percentile 27 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- GitHub_M
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-79 — Improper Neutralization of Input During Web Page Generation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | GitHub_M |
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | NVD · security-advisories@github.com (Secondary) |
Advisories
- GHSA-6v8j-33hc-mv84 — symfony/ux-icons: XSS via unsanitized SVG content in local files and Iconify on-demand responses
European references
- ENISA EUVD · EUVD-2026-42444
- GCVE · GCVE-0-2026-55877
Affected configurations (NVD CPE)
cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*≥ 2.17.0 < 2.36.1cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*≥ 3.0.0 < 3.2.0
Affected products
| Product | Versions |
|---|---|
| symfony · ux | affected >= 2.17.0, < 2.36.1 ; affected >= 3.0.0, < 3.2.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |