Vulnerability · Published Aug 12, 2026 · Assigned by VulnCheck
CVE-2026-72794siyuan before v3.7.4 Session Cookie Key Disclosure via getConf
High 8.6
In plain English
A high-severity security flaw in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.6High
Exploit odds (30 days)0.3%top 74.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siyuan-note/siyuan/kernel | 0.0.0-20260725123945-77421530be4a | GHSA-34fj-mwm6-fjfg |
| Go | github.com/siyuan-note/siyuan/kernel | 0.0.0-20260725123945-77421530be4a | GO-2026-6420 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | 0 – before 3.7.4 |
Weakness: CWE-522 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
References
- GitHub Security Advisory (GHSA-34fj-mwm6-fjfg) vendor-advisory
- VulnCheck Advisory: siyuan before v3.7.4 Session Cookie Key Disclosure via getConf third-party-advisory