CVE-2026-73044 SiYuan before v3.7.4 Stored Cross-Site Scripting via Column Width
Attackers can inject malicious scripts via table column widths, leading to arbitrary code execution in the Electron renderer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-73044?
CVE-2026-73044 is a critical cross-site scripting vulnerability in siyuan-note siyuan, published on 15 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
SiYuan versions before v3.7.4 fail to validate or escape table column width values, allowing stored cross-site scripting injection into style attributes. Attackers can inject malicious payloads through the setAttrViewColWidth API that break out of style attributes and inject event handlers on every table cell, executing arbitrary code in the Electron renderer with Node integration enabled.
Weakness: CWE-79
Which versions are affected by CVE-2026-73044?
How do I fix CVE-2026-73044?
No fix has been published for CVE-2026-73044 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-73044 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73044 exists.
Sources
Also known as GHSA-jm87-g579-58rh.