CVE-2026-93922 SiYuan through 3.8.4 Stored XSS via notebook names
Attackers can execute arbitrary code via stored XSS in notebook names within the SiYuan note-taking application.
- 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-2026-93922?
CVE-2026-93922 is a high-severity cross-site scripting vulnerability in siyuan-note siyuan, published on 18 Sep 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 through 3.8.4 renders notebook names as raw HTML in the Daily Note picker dialog without escaping, allowing stored cross-site scripting in the Electron renderer. Attackers can create notebooks with HTML payloads in names that execute JavaScript with Node.js access when the picker opens, enabling operating system command execution.
Weakness: CWE-79
Which versions are affected by CVE-2026-93922?
How do I fix CVE-2026-93922?
No fix has been published for CVE-2026-93922 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-2026-93922 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93922 exists.
Sources
Also known as GHSA-8c2m-33v9-vvqm, GHSA-jfm6-64hf-4hh9.