CVE-2026-72803 json
SiYuan before v3.7.4 Information Disclosure via getBlockAttrs
published 2026-08-12 2 mo ago modified 2026-10-24 15 d ago also GHSA-qvq9-hq6p-v378 , GO-2026-6404 , EUVD-2026-57463
- cvss
- 5.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
SiYuan versions before v3.7.4 fail to enforce publish-access checks in the getBlockAttrs and batchGetBlockAttrs endpoints. Attackers can retrieve block attributes including names, aliases, memos, and custom fields from protected documents by sending POST requests with block IDs.
Patch / fix
- go github.com/siyuan-note/siyuan/kernel 0.0.0-20260724093256-229fdffd7e4a
- 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
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/siyuan-note/siyuan/security/advisories/GHSA-qvq9-hq6p-v378 referenced PoC, tagged "exploit" by a source, unverified
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 |
| 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 | <0.0.0-20260724093256-229fdffd7e4a |
0.0.0-20260724093256-229fdffd7e4a |
Affected products
- siyuan-note siyuan
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/siyuan-note/siyuan/commit/229fdffd7e4afdef543d4d8495657fda8a369400
web
-
github.com
/siyuan-note/siyuan/security/advisories/GHSA-qvq9-hq6p-v378
vendor-advisory, exploit, web, advisory
-
vulncheck.com
/advisories/siyuan-before-information-disclosure-via-getblockattrs
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-72803
advisory
-
github.com
/siyuan-note/siyuan
package
Sources
- CVE List CVE-2026-72803
- GitHub Advisory GHSA-qvq9-hq6p-v378
- NVD CVE-2026-72803
- OSV GO-2026-6404
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