CVE-2026-72796 json
SiYuan before v3.7.4 Access Control Bypass via Static Routes
published 2026-08-12 2 mo ago modified 2026-10-24 15 d ago also GHSA-fgmr-7w36-9qfq , GO-2026-6423 , EUVD-2026-57456
- cvss
- 5.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
SiYuan before v3.7.4 contains an access control bypass vulnerability where static-file routes in the server mux bypass publish-access controls enforced on the REST API. Attackers with publish reader tokens or anonymous access in disabled-auth mode can read templates, snippets, and export artifacts by directly accessing static routes that lack the same restrictions as their REST API counterparts.
Patch / fix
- go github.com/siyuan-note/siyuan/kernel 0.0.0-20260725122641-34be6c0bb073
- siyuan-note siyuan 3.7.4
- govulncheck-vulndb SLES 16.0, SLES for SAP applications 16.0 0.0.20260916T180043-160000.1.1
suse advisories SUSE-SU-2026:23855-1SUSE-SU-2026:23863-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260916T180043-160000.1.1
opensuse advisories openSUSE-SU-2026:21897-1
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N |
| CNA | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
| CNA | 4.0 | 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
| GitHub | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/siyuan-note/siyuan/kernel | <0.0.0-20260725122641-34be6c0bb073 |
0.0.0-20260725122641-34be6c0bb073 |
Affected products
- siyuan-note siyuan
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/siyuan-note/siyuan/commit/34be6c0bb0739d5b8e99ecc0cbfb474abb16230d
web
-
github.com
/siyuan-note/siyuan/security/advisories/GHSA-fgmr-7w36-9qfq
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/siyuan-before-access-control-bypass-via-static-routes
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-72796
advisory
-
github.com
/siyuan-note/siyuan
package
Sources
- CVE List CVE-2026-72796
- GitHub Advisory GHSA-fgmr-7w36-9qfq
- NVD CVE-2026-72796
- OSV GO-2026-6423
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