CVE-2026-73049 SiYuan before v3.7.4 Information Disclosure via getAttributeViewBacklinks
Attackers can discover hidden document paths and titles by exploiting a filtering flaw in the backlinks endpoint, exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73049?
CVE-2026-73049 is a medium-severity vulnerability in siyuan-note siyuan, published on 14 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 getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.
Weakness: CWE-863
Which versions are affected by CVE-2026-73049?
2 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 | 0.0.0-20260730150429-5b42614311b0 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260730150429-5b42614311b0 |
How do I fix CVE-2026-73049?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260730150429-5b42614311b0 or later.
Is CVE-2026-73049 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73049 exists.
Sources
Also known as GHSA-p4qw-vx5p-g984.