CVE-2026-74867
SiYuan versions before 3.7.4 contain a cross-site request forgery vulnerability in the session-cookie authentication branch of CheckAuth() t
CVSS
4.2
Medium
EPSS
—
KEV
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Exploit Today
0
0-100
Published: Aug 17, 2026 · Last modified: Aug 17, 2026 · CWE-352
Not enough EPSS history yet.
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.