CVE-2026-72796 SiYuan before v3.7.4 Access Control Bypass via Static Routes
Attackers can bypass access controls to read sensitive templates and snippets by accessing static routes directly, bypassing REST API restrictions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72796?
CVE-2026-72796 is a medium-severity missing authorization vulnerability in siyuan-note siyuan, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-72796?
3 open source packages ship an affected version, including github.com/siyuan-note/siyuan/kernel.
| Package | Affected | Fixed in |
|---|---|---|
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260725122641-34be6c0bb073 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260725122641-34be6c0bb073 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260725122641-34be6c0bb073 |
How do I fix CVE-2026-72796?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260725122641-34be6c0bb073 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72796 being exploited?
There is no known exploitation of CVE-2026-72796 in the wild and no public exploit code.
Sources
Also known as GHSA-fgmr-7w36-9qfq, GO-2026-6423.