High severity · published Aug 12, 2026
CVE-2026-72794
siyuan before v3.7.4 Session Cookie Key Disclosure via getConf
8.6
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
siyuan · siyuan-note
before 3.7.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72794
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-72794
github.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34fj-mwm6-fjfg
www.vulncheck.com
https://www.vulncheck.com/advisories/siyuan-before-session-cookie-key-disclosure-via-getconf
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