CVE-2026-101091

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-29. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

SiYuan versions before v3.8.4 fail to properly validate SQL statements in block query embed blocks executed against siyuan.db. Attackers can craft malicious .sy documents with non-read-only SQL statements that execute automatically during background indexing, rendering, or export operations without authentication.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
48
EG Risk 48/100CISA SSVC

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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
15th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 28, 2026

Last Modified

September 29, 2026

Advisory Details (3)

Auto-updated Sep 28, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
generic

SiYuan before v3.8.4 SQL Injection via Block Query Embed | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-3.8.4-sql-injection-via-block-query-embed
github Patch Available🟡 PoC Available

Block query embed scripts run arbitrary non-read-only SQL on siyuan.db via unguarded auto-index, render, and export paths · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-67p9-hm94-xwf3
github_commit

commit e8ace0c89182 (siyuan-note/siyuan)

Fix landed in siyuan-note/siyuan commit e8ace0c89182 — awaiting tagged release

https://github.com/siyuan-note/siyuan/commit/e8ace0c89182c7ee1a1298ff2a849bb6a83dfdec

Vendor Advisories for CVE-2026-101091(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 26× in last 7d / 26× 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. 2026-10-04 07:24 UTCGHSA enrichment
  2. 2026-10-03 19:24 UTCEG score recompute
  3. 2026-10-03 19:24 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 07:25 UTCGHSA enrichment
  6. 2026-10-02 19:24 UTCEG score recompute
  7. 2026-10-02 19:24 UTCGHSA enrichment
  8. 2026-10-02 07:24 UTCEG score recompute
  9. 2026-10-02 07:24 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 19:24 UTCGHSA enrichment
  12. 2026-10-01 07:22 UTCGHSA enrichment
  13. 2026-09-30 19:22 UTCEG score recompute
  14. 2026-09-30 19:22 UTCGHSA enrichment
  15. 2026-09-30 15:02 UTCEPSS rescore
  16. 2026-09-30 07:22 UTCGHSA enrichment
  17. 2026-09-29 19:22 UTCEG score recompute
  18. 2026-09-29 19:22 UTCGHSA enrichment
  19. 2026-09-29 18:32 UTCEG score recompute
  20. 2026-09-29 18:32 UTCGHSA enrichment
  21. 2026-09-29 15:20 UTCEPSS rescore
  22. 2026-09-29 10:42 UTCEG score recompute
  23. 2026-09-29 10:42 UTCGHSA enrichment
  24. 2026-09-28 22:29 UTCEG score recompute
  25. 2026-09-28 22:12 UTCEG score recompute
Show 1 more
  1. 2026-09-28 22:11 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-101091?
CVE-2026-101091 is a high vulnerability published on September 28, 2026. SiYuan versions before v3.8.4 fail to properly validate SQL statements in block query embed blocks executed against siyuan.db. Attackers can craft malicious .sy documents with non-read-only SQL statements that execute automatically during background indexing, rendering, or export operations without…
When was CVE-2026-101091 disclosed?
CVE-2026-101091 was first published on September 28, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-101091 actively exploited?
CVE-2026-101091 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101091?
CVE-2026-101091 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-101091?
A fix for CVE-2026-101091 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-101091 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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