CVE-2026-72789

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-12. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 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 before v3.7.4 fails to properly validate publish access for encrypted notebooks, treating them as publicly accessible by default. Anonymous readers can enumerate and retrieve fully decrypted document content from unlocked encrypted notebooks through the publish API without authentication or key material.

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
22%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 12, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

SiYuan before v3.7.4 Authentication Bypass via Encrypted Notebooks | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-authentication-bypass-via-encrypted-notebooks
github Patch Available🟡 PoC Available

The publish-access gate treats encrypted notebooks as publicly accessible by default, allowing anonymous readers to retrieve fully decrypted document content while a notebook is unlocked · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v684-q882-jgmq

Vendor Advisories for CVE-2026-72789(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 35× in last 7d / 44× 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. 2026-08-21 05:17 UTCEG score recompute
  2. 2026-08-21 05:17 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 17:44 UTCGHSA enrichment
  5. 2026-08-20 06:10 UTCGHSA enrichment
  6. 2026-08-19 18:36 UTCEG score recompute
  7. 2026-08-19 18:36 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 06:21 UTCGHSA enrichment
  10. 2026-08-18 18:45 UTCEG score recompute
  11. 2026-08-18 18:45 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 07:11 UTCGHSA enrichment
  15. 2026-08-17 19:38 UTCEG score recompute
  16. 2026-08-17 19:38 UTCGHSA enrichment
  17. 2026-08-17 13:47 UTCEPSS rescore
  18. 2026-08-17 08:04 UTCGHSA enrichment
  19. 2026-08-16 20:31 UTCEG score recompute
  20. 2026-08-16 20:31 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 08:58 UTCEG score recompute
  24. 2026-08-16 08:58 UTCGHSA enrichment
  25. 2026-08-16 02:15 UTCEPSS rescore
Show 19 more
  1. 2026-08-15 21:25 UTCGHSA enrichment
  2. 2026-08-15 09:52 UTCEG score recompute
  3. 2026-08-15 09:52 UTCGHSA enrichment
  4. 2026-08-15 01:31 UTCEPSS rescore
  5. 2026-08-14 22:18 UTCEG score recompute
  6. 2026-08-14 22:18 UTCGHSA enrichment
  7. 2026-08-14 22:04 UTCEG score recompute
  8. 2026-08-14 22:04 UTCGHSA enrichment
  9. 2026-08-14 17:09 UTCEG score recompute
  10. 2026-08-14 17:09 UTCGHSA enrichment
  11. 2026-08-14 06:59 UTCEG score recompute
  12. 2026-08-14 06:59 UTCGHSA enrichment
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-13 19:26 UTCGHSA enrichment
  15. 2026-08-13 07:53 UTCEG score recompute
  16. 2026-08-13 07:53 UTCGHSA enrichment
  17. 2026-08-12 20:20 UTCEG score recompute
  18. 2026-08-12 19:21 UTCEG score recompute
  19. 2026-08-12 19:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72789?
CVE-2026-72789 is a high vulnerability published on August 12, 2026. SiYuan before v3.7.4 fails to properly validate publish access for encrypted notebooks, treating them as publicly accessible by default. Anonymous readers can enumerate and retrieve fully decrypted document content from unlocked encrypted notebooks through the publish API without authentication or…
When was CVE-2026-72789 disclosed?
CVE-2026-72789 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72789 actively exploited?
CVE-2026-72789 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 78.1% of all scored CVEs.
What is the CVSS score of CVE-2026-72789?
CVE-2026-72789 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-72789?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72789, 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

Explore the affected products and dependency analysis for CVE-2026-72789

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