SiYuan before v3.7.4 Access Control Bypass via Static Routes (CVE-2026-72796) | HOL Guard CVE

Medium · CVSS 5.8CVE-2026-72796GHSA-FGMR-7W36-9QFQ

SiYuan before v3.7.4 Access Control Bypass via Static Routes

Answer in brief

CVE-2026-72796 records a Medium severity (CVSS 5.8) vulnerability in SiYuan before v3.7.4 Access Control Bypass via Static Routes. The current sources do not mark it as known exploited. The current feed maps siyuan-note/siyuan (generic), github.com/siyuan-note/siyuan/kernel (go). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 12, 2026Updated Sep 4, 2026Source checked Sep 28, 2026First seen by HOL Aug 12, 2026Material review Sep 4, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 5.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps siyuan-note/siyuan (generic), github.com/siyuan-note/siyuan/kernel (go). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
siyuan-note/siyuangeneric	>=0 <3.7.4	3.7.4
github.com/siyuan-note/siyuan/kernelgo	<0.0.0-20260725122641-34be6c0bb073	0.0.0-20260725122641-34be6c0bb073

Recommended response

Check inventory. Check lockfiles and deployed manifests for siyuan-note/siyuan, github.com/siyuan-note/siyuan/kernel.
Review the reported fix. Update siyuan-note/siyuan to 3.7.4; github.com/siyuan-note/siyuan/kernel to 0.0.0-20260725122641-34be6c0bb073 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Upstream source description

SiYuan before v3.7.4 contains an access control bypass vulnerability where static-file routes in the server mux bypass publish-access controls enforced on the REST API. Attackers with publish reader tokens or anonymous access in disabled-auth mode can read templates, snippets, and export artifacts by directly accessing static routes that lack the same restrictions as their REST API counterparts.

Quoted source text, attributed separately from HOL analysis.