VULNERABILITY INTELLIGENCE
CVE-2026-74867
CVSS score4.2 MEDIUM
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-08-17
Last modified2026-08-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Description
SiYuan versions before 3.7.4 contain a cross-site request forgery vulnerability in the session-cookie authentication branch of CheckAuth() that lacks Origin/Referer validation and sets no explicit SameSite attribute on session cookies. Attackers can craft malicious web pages that perform unauthorized actions on behalf of authenticated users by submitting requests with valid session cookies, relying on browser default SameSite policies rather than server-enforced protections.
Weakness classification
- disclosure@vulncheck.com: CWE-352