CVE-2026-72810

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-14. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.6Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.6
EG Score
8.6(high)
EG Risk
70(Attend)
EG Risk 70/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 18, 2026

Advisory Details (2)

Auto-updated Aug 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

SiYuan before v3.7.4 Publish-Boundary Bypass via WebSocket | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-publish-boundary-bypass-via-websocket
github Patch Available🟡 PoC Available

Publish-boundary bypass via WebSocket broadcast: anonymous readers receive a live unfiltered feed of all edits including protected/forbidden documents (publish mode) · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mw8r-mw84-88v2

Vendor Advisories for CVE-2026-72810(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 36× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 23:28 UTCEG score recompute
  2. 2026-08-20 23:28 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:11 UTCGHSA enrichment
  5. 2026-08-20 00:53 UTCEG score recompute
  6. 2026-08-20 00:53 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 13:33 UTCGHSA enrichment
  9. 2026-08-19 02:16 UTCGHSA enrichment
  10. 2026-08-18 14:58 UTCEG score recompute
  11. 2026-08-18 14:58 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 03:25 UTCEG score recompute
  15. 2026-08-18 03:24 UTCGHSA enrichment
  16. 2026-08-18 02:41 UTCEG score recompute
  17. 2026-08-18 02:41 UTCGHSA enrichment
  18. 2026-08-18 00:09 UTCEG score recompute
  19. 2026-08-18 00:09 UTCGHSA enrichment
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 12:49 UTCGHSA enrichment
  22. 2026-08-17 01:32 UTCEG score recompute
  23. 2026-08-17 01:32 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 11 more
  1. 2026-08-16 14:15 UTCGHSA enrichment
  2. 2026-08-16 02:58 UTCEG score recompute
  3. 2026-08-16 02:58 UTCGHSA enrichment
  4. 2026-08-16 02:15 UTCEPSS rescore
  5. 2026-08-15 15:41 UTCGHSA enrichment
  6. 2026-08-15 04:24 UTCGHSA enrichment
  7. 2026-08-14 17:07 UTCEG score recompute
  8. 2026-08-14 17:06 UTCGHSA enrichment
  9. 2026-08-14 12:22 UTCEG score recompute
  10. 2026-08-14 11:49 UTCEG score recompute
  11. 2026-08-14 11:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72810?
CVE-2026-72810 is a high vulnerability published on August 14, 2026. 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…
When was CVE-2026-72810 disclosed?
CVE-2026-72810 was first published in the National Vulnerability Database on August 14, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72810 actively exploited?
CVE-2026-72810 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 75.9% of all scored CVEs.
What is the CVSS score of CVE-2026-72810?
CVE-2026-72810 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-72810?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72810, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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