by Kastro
Paper/Archive/CVE-2026-72794

CVE-2026-72794

siyuan-note siyuan — siyuan before v3.7.4 Session Cookie Key Disclosure via getConf

EPSS 0.3%public exploitCVSS 9.2
critical.is priorityof 100
43
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 25.6.256 × 205.1Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
siyuan< 3.7.43.7.4CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
VulnCheck (CNA)8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

exploitgithub.com/siyuan-note/siyuan/security/advisories/GHSA-34fj-mwm6-fjfgwriteupvulncheck.com/advisories/siyuan-before-session-cookie-key-disclosure-via-getconf