CVE-2026-42547 IRIS Alerts Can be Falsely Attributed to Customers
Attackers can falsely attribute alerts to unauthorized customers and potentially exfiltrate data via XSS, requiring a patch to enforce proper authorization checks.
- 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-2026-42547?
CVE-2026-42547 is a medium-severity missing authorization 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. In versions prior to 2.4.28, users can create alerts for customers that are not assigned to them. This can be abused to falsely attribute fake alerts to customers. In combination with Cross-Site Scripting, this can also be used to exfiltrate alerts from other customers. Version 2.4.28 contains a patch.
Weakness: CWE-863
Which versions are affected by CVE-2026-42547?
How do I fix CVE-2026-42547?
No fix has been published for CVE-2026-42547 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-42547 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42547 exists.
Sources
Also known as GHSA-8hwq-v6vm-9grr.