CVE-2026-72810
published 2026-08-14CVE-2026-72810: SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive…
PriorityP354high8.6CVSS 3.1
AVNACLPRNUINSCCHINAN
EPSS
0.31%
24.4th percentile
SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive unfiltered edits. Attackers can establish a WebSocket connection to the publish surface and passively receive real-time content events including password-protected and forbidden documents without authentication.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | siyuan-note_siyuan_kernel | >= 0 < 0.0.0-20260723013612-ba948639d7f6 | 0.0.0-20260723013612-ba948639d7f6 |
| siyuan-note | siyuan | < 3.7.4 | 3.7.4 |
CVSS provenance
nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
nvdv4.09.2CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/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
ghsa8.6HIGH
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GHSA
SiYuan: Publish-boundary bypass via WebSocket broadcast: anonymous readers receive a live unfiltered feed of all edits including protected/forbidden documents (publish mode)
ghsa·2026-09-03·CVSS 8.6
CVE-2026-72810 [HIGH] CWE-862 SiYuan: Publish-boundary bypass via WebSocket broadcast: anonymous readers receive a live unfiltered feed of all edits including protected/forbidden documents (publish mode)
SiYuan: Publish-boundary bypass via WebSocket broadcast: anonymous readers receive a live unfiltered feed of all edits including protected/forbidden documents (publish mode)
**CVE:** This vulnerability corresponds to [CVE-2026-72810](https://nvd.nist.gov/vuln/detail/CVE-2026-72810).
### Summary
WebSocket sessions established through the publish surface (port 6808, `RoleReader` anonymous when `Publish.Auth.Enable` is `false`) are added to the same broadcast session pool as authenticated sessions. The kernel's broadcast functions push content events transactions carrying block DOM, document save/create, move/rename to every session in the pool with no role or publish-access filtering. As a result, an anonymous reader who holds a WebSocket connection open passively receives a real-time fee
GHSA
SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive unfiltered edits.
ghsa_unreviewed·2026-08-14
CVE-2026-72810 [CRITICAL] CWE-862 SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive unfiltered edits.
SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive unfiltered edits. Attackers can establish a WebSocket connection to the publish surface and passively receive real-time content events including password-protected and forbidden documents without authentication.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-14
Published