CVE-2026-55592 Dashy: XSS in workspace url parameter
Attackers can execute arbitrary JavaScript in a victim's browser via a crafted workspace URL, allowing data theft and session hijacking in Dashy.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-55592?
CVE-2026-55592 is a low-severity cross-site scripting vulnerability in lissy93 dashy, published on 7 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Dashy is a self-hostable personal dashboard. Prior to 4.3.7, Dashy's workspace view trusts the url query parameter and assigns it directly to an iframe source without scheme validation. If a logged-in user opens a crafted workspace link containing a javascript: URL, JavaScript runs on the Dashy origin and can read same-origin browser data, interact with the Dashy DOM, and send requests as the victim. This issue is fixed in version 4.3.7.
Weakness: CWE-79
Which versions are affected by CVE-2026-55592?
How do I fix CVE-2026-55592?
No fix has been published for CVE-2026-55592 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-2026-55592 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55592 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-58mp-4qr3-vmrc.