CVE-2026-55877mediumCWE-79

CVE-2026-55877: fallo de gravedad media en symfony ux

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

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear ux+ Monitorear symfony/ux-icons

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.1epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Productos afectados
symfony · ux
CVEs relacionadas — symfony ux

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-49209MEDIUMSymfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requestsEPSS 0.6%CVE-2026-49211MEDIUMSymfony UX: Information exposure via unescaped LIKE wildcards in EntitySearchUtilEPSS 0.5%CVE-2026-49208MEDIUMSymfony UX: Format-less date LiveProps parsed with the permissive DateTime constructorEPSS 0.4%CVE-2026-49210LOWSymfony UX: XSS in symfony/ux-live-component via attacker-controlled child component tagEPSS 0.3%CVE-2026-49216MEDIUMSymfony UX: XSS in symfony/ux-autocomplete via unescaped AJAX response dataEPSS 0.3%CVE-2025-47946MEDIUMsymfony/ux-live-component and symfony/ux-twig-component vulnerable to unsanitized HTML attribute injection via ComponentAttributesEPSS 0.3%