CVE-2026-93591

HIGHPre-NVD 7.67.6—
EchelonGraph scoreHIGH confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-09-18. a secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.6Exploit: Elevated riskExposed: 0

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

SiYuan versions before 3.8.3 contain an SQL injection vulnerability in the graph.go query2Stmt function where tag values are concatenated raw into SQL string literals without escaping single quotes. A publish-mode reader or anonymous visitor can inject SQL via inline HTML span tags in the getGraph endpoint to execute arbitrary queries on the read-write database and exfiltrate private data across notebooks.

CVSS v3
7.6
EG Score
7.6(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity76% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

SiYuan before 3.8.3 SQL Injection via unescaped tag in graph.go | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-3.8.3-sql-injection-via-unescaped-tag-in-graph-go
github Patch Available🟡 PoC Available

Reader/anonymous SQL injection via unescaped tag in graph.go query2Stmt exfiltrates cross-notebook private data · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-5rwv-4j4c-f954

Vendor Advisories for CVE-2026-93591(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 30× in last 7d / 30× 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. 2026-09-25 08:22 UTCGHSA enrichment
  2. 2026-09-24 19:24 UTCEG score recompute
  3. 2026-09-24 19:24 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 06:25 UTCEG score recompute
  6. 2026-09-24 06:25 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 17:27 UTCGHSA enrichment
  9. 2026-09-23 04:26 UTCEG score recompute
  10. 2026-09-23 04:26 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-22 15:27 UTCGHSA enrichment
  13. 2026-09-22 02:28 UTCEG score recompute
  14. 2026-09-22 02:28 UTCGHSA enrichment
  15. 2026-09-21 21:09 UTCEPSS rescore
  16. 2026-09-21 13:30 UTCGHSA enrichment
  17. 2026-09-21 00:32 UTCEG score recompute
  18. 2026-09-21 00:32 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-20 11:33 UTCGHSA enrichment
  21. 2026-09-19 22:31 UTCEG score recompute
  22. 2026-09-19 22:31 UTCGHSA enrichment
  23. 2026-09-19 09:32 UTCGHSA enrichment
  24. 2026-09-18 20:31 UTCEG score recompute
  25. 2026-09-18 20:31 UTCGHSA enrichment
Show 5 more
  1. 2026-09-18 19:59 UTCEG score recompute
  2. 2026-09-18 19:59 UTCGHSA enrichment
  3. 2026-09-18 14:21 UTCEG score recompute
  4. 2026-09-18 13:29 UTCEG score recompute
  5. 2026-09-18 13:29 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-93591?
CVE-2026-93591 is a high vulnerability published on September 18, 2026. SiYuan versions before 3.8.3 contain an SQL injection vulnerability in the graph.go query2Stmt function where tag values are concatenated raw into SQL string literals without escaping single quotes. A publish-mode reader or anonymous visitor can inject SQL via inline HTML span tags in the getGraph…
When was CVE-2026-93591 disclosed?
CVE-2026-93591 was first published in the National Vulnerability Database on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93591 actively exploited?
CVE-2026-93591 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 78.2% of all scored CVEs.
What is the CVSS score of CVE-2026-93591?
CVE-2026-93591 has a CVSS v3 base score of 7.6 (NVD).
How do I remediate CVE-2026-93591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93591, 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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