SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.
CVE-2026-93922
HIGHPre-NVD 8.88.8
EchelonGraph scoreLOW confidence
This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 8.8Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(low)
- EG Risk
- 44(Track)EG Risk 44/100SSVC: 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 computedSeverity88% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
September 18, 2026
Last Modified
September 19, 2026
Advisory Details (5)
Auto-updated Sep 18, 2026🔬 Proof of concept available. Patch available. Sources: github.
generic
SiYuan through 3.8.4 Stored XSS via notebook names | Advisories | VulnCheck
https://www.vulncheck.com/advisories/siyuan-through-3.8.4-stored-xss-via-notebook-namesgeneric
siyuan/kernel/model/file.go at v3.8.4 · siyuan-note/siyuan · GitHub
https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/file.go#L2446-L2454generic
siyuan/app/src/util/mount.ts at v3.8.4 · siyuan-note/siyuan · GitHub
https://github.com/siyuan-note/siyuan/blob/v3.8.4/app/src/util/mount.ts#L72generic
GitHub - siyuan-note/siyuan: An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作 · GitHub
https://github.com/siyuan-note/siyuangithub Patch Available🟡 PoC Available
Stored XSS via Unsanitized Notebook Name in the Daily Note Notebook Picker Leading to Remote Code Execution in Electron · Advisory · siyuan-note/siyuan · GitHub
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-8c2m-33v9-vvqmVendor Advisories for CVE-2026-93922(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 3× in last 7d / 3× 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.
- 2026-09-19 00:21 UTCEG score recompute
- 2026-09-18 23:23 UTCEG score recompute
- 2026-09-18 23:22 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-93922?
CVE-2026-93922 is a high vulnerability published on September 18, 2026. SiYuan through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens,…
When was CVE-2026-93922 disclosed?
CVE-2026-93922 was first published in the National Vulnerability Database on September 18, 2026, with the most recent update on September 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-93922?
CVE-2026-93922 has a CVSS v3 base score of 8.8 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-93922?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-93922, 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-2026-93922
Is Your Infrastructure Affected by CVE-2026-93922?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.