CVE-2026-73609 SiYuan before v3.7.4 Information Disclosure via getBookmarkLabels
Attackers can access all bookmark labels in SiYuan workspaces via the getBookmarkLabels endpoint, revealing sensitive organizational information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73609?
CVE-2026-73609 is a medium-severity 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 getBookmarkLabels endpoint that returns all bookmark labels in the workspace without publish-access filtering. Anonymous readers and publish-mode readers can obtain the complete bookmark vocabulary across the workspace, disclosing subject matter and organizational information from inaccessible documents.
Weakness: CWE-862
Which versions are affected by CVE-2026-73609?
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-2026-73609?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260812083335-251596fc0de2 or later.
Is CVE-2026-73609 being exploited?
There is no known exploitation of CVE-2026-73609 in the wild and no public exploit code.
Sources
Also known as GHSA-j4ph-9xwf-wcj4, GO-2026-6634.