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CVE-2026-55877

Symfony UX: XSS in symfony/ux-icons via unsanitized SVG content in local files and Iconify on-demand responses PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
symfony / uxaffected >= 2.17.0, < 2.36.1; affected >= 3.0.0, < 3.2.0

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.