CVE-2026-31859

MEDIUM

6.1

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung6.1

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionREQUIRED

Veroffentlicht3/11/2026

Zuletzt geandert3/17/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

craftcms:craft_cms

Schwachen (CWE)

CWE-79CWE-116

Referenzen

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

IOC Korrelationen

Keine Korrelationen erfasst

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