CVE-2026-42539 IRIS has an Excessive Data Exposure issue
Attackers can access sensitive data not required for client operations in IRIS incident response platform, exposing confidential investigation details.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42539?
CVE-2026-42539 is a medium-severity vulnerability in dfir-iris iris-web, published on 4 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IRIS is a web collaborative platform that helps incident responders share technical details during investigations. Versions prior to 2.4.28 return sensitive data to the user which are not required for the client’s operation. Version 2.4.28 contains a patch.
Weakness: CWE-201
Which versions are affected by CVE-2026-42539?
How do I fix CVE-2026-42539?
No fix has been published for CVE-2026-42539 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-42539 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42539 exists.
Sources
Also known as GHSA-g588-5gmf-p5cx.