CVE-2026-73607 SiYuan before v3.7.4 Information Disclosure via getOutlineStorage
Attackers can access unauthorized document outline data via an unauthenticated API endpoint in SiYuan.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73607?
CVE-2026-73607 is a medium-severity missing authorization vulnerability in siyuan-note siyuan, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the /api/storage/getOutlineStorage endpoint that performs no authorization checks. Attackers can retrieve outline state including heading identifiers for any document by supplying its identifier, even for documents forbidden to the requester.
Weakness: CWE-862
Which versions are affected by CVE-2026-73607?
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 | 0.0.0-20260812083335-251596fc0de2 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260812083335-251596fc0de2 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260812083335-251596fc0de2 |
How do I fix CVE-2026-73607?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260812083335-251596fc0de2 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73607 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73607 exists.
Sources
Also known as GHSA-53fp-9jmv-227g, GO-2026-6624.