CVE-2026-44586 SiYuan: Bazaar marketplace renders unescaped package author metadata, allowing XSS and Electron code execution
Attackers can execute arbitrary code on the host via stored XSS in the Bazaar marketplace due to unescaped metadata and insecure Electron configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-44586?
CVE-2026-44586 is a high-severity cross-site scripting vulnerability in siyuan-note siyuan, published on 14 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
SiYuan is an open-source personal knowledge management system. From 2.1.12 to before 3.7.0. SiYuan's Bazaar marketplace renders package author metadata from the public bazaar stage feed into HTML without escaping. In the desktop app this becomes stored XSS, and because SiYuan's Electron windows are created with nodeIntegration: true and contextIsolation: false, a successful payload can call Node.js APIs and execute code on the host. This vulnerability is fixed in 3.7.0.
Which versions are affected by CVE-2026-44586?
How do I fix CVE-2026-44586?
No fix has been published for CVE-2026-44586 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-2026-44586 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44586 exists.
Sources
Also known as GHSA-x6wf-w2rg-2gw9.