CVE-2026-31859

MEDIUM

6.1

Descricao

Craft is a content management system (CMS). The fix for CVE-2025-35939 in craftcms/cms introduced a strip_tags() call in src/web/User.php to sanitize return URLs before they are stored in the session. However, strip_tags() only removes HTML tags (angle brackets) -- it does not inspect or filter URL schemes. Payloads like javascript:alert(document.cookie) contain no HTML tags and pass through strip_tags() completely unmodified, enabling reflected XSS when the return URL is rendered in an href attribute. This vulnerability is fixed in 5.9.7 and 4.17.3.

Detalhes CVE

Pontuacao CVSS v3.16.1

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioREQUIRED

Publicado3/11/2026

Ultima modificacao3/17/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

craftcms:craft_cms

Fraquezas (CWE)

CWE-79CWE-116

Referencias

https://github.com/craftcms/cms/security/advisories/GHSA-fvwq-45qv-xvhv(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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