GitHub Security Advisory (GHSA-34fj-mwm6-fjfg)Vendor advisory
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34fj-mwm6-fjfg CVE-2026-72794
CRITICAL
siyuan before v3.7.4 Session Cookie Key Disclosure via getConf
Record summary
CVE-2026-72794 has a selected CVSS score of 9.2 (critical).
Description
siyuan versions before v3.7.4 expose the session cookie signing key through the /api/system/getConf endpoint to unauthenticated users in publish mode. Attackers can retrieve the CookieKey value and forge valid session cookies to impersonate users or gain administrative access.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationPoC
AutomatableYes
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 12, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Default status: unaffected | CVE List | Before 3.7.4 | affected |
| 3.7.4 | unaffected |
References
3nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-72794 VulnCheck Advisory: siyuan before v3.7.4 Session Cookie Key Disclosure via getConfThird-party advisory
https://www.vulncheck.com/advisories/siyuan-before-session-cookie-key-disclosure-via-getconf