CVE-2026-73605 SiYuan before v3.7.4 Path Traversal via getUniqueFilename
Attackers can probe filesystem existence via path traversal in SiYuan, enabling reconnaissance of host files and directories.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73605?
CVE-2026-73605 is a medium-severity path traversal 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 a path traversal vulnerability in the getUniqueFilename endpoint that allows anonymous readers to probe filesystem existence without validation or confinement. Attackers can supply arbitrary absolute paths to determine whether files and directories exist on the host, enabling reconnaissance of the filesystem layout and installed software.
Weakness: CWE-862
Which versions are affected by CVE-2026-73605?
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-2026-73605?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260812083335-251596fc0de2 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-73605 being exploited?
There is no known exploitation of CVE-2026-73605 in the wild and no public exploit code.
Sources
Also known as GHSA-hf8h-97gm-4x2p, GO-2026-6626.