CVE-2026-45371 SiYuan: SiYuan publish-mode Reader can mutate Conf and SQL index via 8 ungated APIs
Attackers with reader or editor roles can modify configuration and SQL index via ungated APIs in SiYuan publish mode.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-45371?
CVE-2026-45371 is a high-severity missing authorization vulnerability in siyuan-note siyuan, published on 14 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan publish-mode Reader can mutate Conf and SQL index via 8 ungated APIs. POST /api/graph/getGraph, POST /api/graph/getLocalGraph, POST /api/sync/setSyncInterval, POST /api/storage/updateRecentDocViewTime, POST /api/storage/updateRecentDocCloseTime, POST /api/storage/updateRecentDocOpenTime, POST /api/storage/batchUpdateRecentDocCloseTime, and POST /api/search/updateEmbedBlock are registered with model.CheckAuth only, omitting both model.CheckAdminRole and model.CheckReadonly. Each of them writes server-side state, including atomic rewrites of <workspace>/conf/conf.json via model.Conf.Save(). Any caller whose JWT passes CheckAuth, including a publish-service RoleReader (the role assigned to anonymous publish visitors) and a RoleEditor against a workspace where Editor.ReadOnly = true, can hit them This vulnerability is fixed in 3.7.0.
Which versions are affected by CVE-2026-45371?
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 | 0.0.0-20260512140701-d7b77d945e0d |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260512140701-d7b77d945e0d |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260512140701-d7b77d945e0d |
How do I fix CVE-2026-45371?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260512140701-d7b77d945e0d or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-45371 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45371 exists.
Sources
Also known as GHSA-gmmv-4cc5-wr9r, GO-2026-5402.