CVE-2026-74867

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.

References

https://www.vulncheck.com/advisories/siyuan-before-cross-site-request-forgery-via-checkauth

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhm2-g993-p656

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4