CVE-2026-42547: IRIS Alerts Can be Falsely Attributed to Customers

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-04 · updated 2026-07-22
Weakness: CWE-863

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.

Affected products

dfir-iris iris-web: before 2.4.28

References

https://github.com/dfir-iris/iris-web/security/advisories/GHSA-8hwq-v6vm-9grr
http://www.openwall.com/lists/oss-security/2026/05/19/12
https://github.com/dfir-iris/iris-web/security/advisories/GHSA-8hwq-v6vm-9grr

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