CVE-2026-74906 SiYuan before v3.7.4 Incorrect Authorization via Publish Access
Attackers can read forbidden content from SiYuan notes via publish-mode endpoints due to incorrect authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-74906?
CVE-2026-74906 is a high-severity missing authorization vulnerability in siyuan-note siyuan, published on 18 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 incorrect authorization vulnerability in eight publish-mode reader-facing endpoints that filter results using the visibility list instead of the disabled list. Anonymous visitors can discover and read content from documents explicitly marked as forbidden from publishing by accessing search, backlink, asset content, saved criteria, recent documents, graph, and tag endpoints.
Weakness: CWE-863
Which versions are affected by CVE-2026-74906?
How do I fix CVE-2026-74906?
No fix has been published for CVE-2026-74906 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-74906 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-74906 exists.
Sources
Also known as GHSA-x3p9-xqgm-hxww.