CVE-2026-72811

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-14. the CNA's CVSS baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this week
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: None knownExposed: 0

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

SiYuan versions <= v3.7.2 contain a SQL injection vulnerability in the backlink/mention search query (kernel/model/backlink.go), which concatenates stored block metadata (title, name, alias, anchor text) and the client-supplied keyword into a SQL MATCH/search statement while escaping only the double-quote character and not the single quote. A single quote in the client keyword (first-order, reachable by an anonymous or RoleReader user on the publish surface) or in stored document metadata (second-order) breaks out of the string literal. Because the query runs on the main read-write siyuan.db handle via a statement-stacking-capable driver, an attacker can execute arbitrary SQL, enabling cross-notebook read and write. Fixed in v3.7.4.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 14, 2026

Last Modified

August 14, 2026

Advisory Details (2)

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

SiYuan before v3.7.4 SQL Injection via backlink search | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-sql-injection-via-backlink-search
github Patch Available🟡 PoC Available

SQL injection in backlink/mention search via unescaped stored and client input (publish mode): first-order (client keyword) and second-order (stored document title) breakout on read-write handle · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-q2vg-7qgx-x5fc

Vendor Advisories for CVE-2026-72811(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 62× in last 7d / 62× 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 06:07 UTCGHSA enrichment
  2. 2026-08-21 02:09 UTCEG score recompute
  3. 2026-08-21 02:09 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 22:11 UTCGHSA enrichment
  6. 2026-08-20 18:14 UTCGHSA enrichment
  7. 2026-08-20 14:16 UTCGHSA enrichment
  8. 2026-08-20 10:17 UTCGHSA enrichment
  9. 2026-08-20 06:20 UTCGHSA enrichment
  10. 2026-08-20 02:22 UTCGHSA enrichment
  11. 2026-08-19 22:24 UTCGHSA enrichment
  12. 2026-08-19 18:26 UTCEG score recompute
  13. 2026-08-19 18:26 UTCGHSA enrichment
  14. 2026-08-19 17:04 UTCEPSS rescore
  15. 2026-08-19 13:04 UTCGHSA enrichment
  16. 2026-08-19 09:06 UTCGHSA enrichment
  17. 2026-08-19 05:06 UTCGHSA enrichment
  18. 2026-08-19 00:59 UTCGHSA enrichment
  19. 2026-08-18 21:01 UTCGHSA enrichment
  20. 2026-08-18 17:04 UTCEG score recompute
  21. 2026-08-18 17:03 UTCGHSA enrichment
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-18 13:49 UTCEPSS rescore
  24. 2026-08-18 12:41 UTCGHSA enrichment
  25. 2026-08-18 08:25 UTCGHSA enrichment
Show 37 more
  1. 2026-08-18 04:25 UTCGHSA enrichment
  2. 2026-08-18 00:27 UTCGHSA enrichment
  3. 2026-08-17 20:26 UTCGHSA enrichment
  4. 2026-08-17 16:28 UTCEG score recompute
  5. 2026-08-17 16:28 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-17 12:29 UTCGHSA enrichment
  8. 2026-08-17 08:31 UTCGHSA enrichment
  9. 2026-08-17 04:34 UTCGHSA enrichment
  10. 2026-08-17 00:36 UTCGHSA enrichment
  11. 2026-08-16 20:38 UTCGHSA enrichment
  12. 2026-08-16 16:40 UTCEG score recompute
  13. 2026-08-16 16:40 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 12:42 UTCGHSA enrichment
  17. 2026-08-16 08:44 UTCGHSA enrichment
  18. 2026-08-16 04:47 UTCEG score recompute
  19. 2026-08-16 04:47 UTCGHSA enrichment
  20. 2026-08-16 02:15 UTCEPSS rescore
  21. 2026-08-16 00:49 UTCGHSA enrichment
  22. 2026-08-15 20:51 UTCGHSA enrichment
  23. 2026-08-15 16:53 UTCGHSA enrichment
  24. 2026-08-15 12:55 UTCGHSA enrichment
  25. 2026-08-15 08:57 UTCGHSA enrichment
  26. 2026-08-15 04:59 UTCGHSA enrichment
  27. 2026-08-15 01:01 UTCGHSA enrichment
  28. 2026-08-14 21:04 UTCGHSA enrichment
  29. 2026-08-14 17:06 UTCEG score recompute
  30. 2026-08-14 17:06 UTCGHSA enrichment
  31. 2026-08-14 16:31 UTCEG score recompute
  32. 2026-08-14 16:31 UTCGHSA enrichment
  33. 2026-08-14 15:39 UTCEG score recompute
  34. 2026-08-14 15:39 UTCGHSA enrichment
  35. 2026-08-14 12:22 UTCEG score recompute
  36. 2026-08-14 11:49 UTCEG score recompute
  37. 2026-08-14 11:49 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72811?
CVE-2026-72811 is a critical vulnerability published on August 14, 2026. SiYuan versions <= v3.7.2 contain a SQL injection vulnerability in the backlink/mention search query (kernel/model/backlink.go), which concatenates stored block metadata (title, name, alias, anchor text) and the client-supplied keyword into a SQL MATCH/search statement while escaping only the…
When was CVE-2026-72811 disclosed?
CVE-2026-72811 was first published in the National Vulnerability Database 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-2026-72811 actively exploited?
CVE-2026-72811 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 83.3% of all scored CVEs.
What is the CVSS score of CVE-2026-72811?
CVE-2026-72811 has a CVSS v4.0 base score of 10.0 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-72811?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72811, 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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