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CVE-2026-42547 dfir-iris CVE debrief

CVE-2026-42547 is a vulnerability in IRIS, a web collaborative platform for incident responders. The vulnerability allows users to create alerts for customers that are not assigned to them, potentially leading to false attribution of fake alerts to customers. When combined with Cross-Site Scripting (XSS), this vulnerability can also be exploited to exfiltrate alerts from other customers. The issue was patched in version 2.4.28.

Vendor
dfir-iris
Product
iris-web
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-06-08
Advisory published
2026-06-04
Advisory updated
2026-06-08

Who should care

Users of IRIS web collaborative platform versions prior to 2.4.28 should apply the patch to prevent potential misattribution of alerts and data exfiltration.

Technical summary

The vulnerability has a CVSS score of 5.4 and a severity rating of MEDIUM. It can be exploited by users with low privileges (PR:L) over the network (AV:N) without requiring user interaction (UI:N). Successful exploitation can lead to low impact on confidentiality (C:L) and integrity (I:L).

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply the patch by upgrading to IRIS version 2.4.28 or later.
  • Review and restrict user permissions to ensure that users can only create alerts for assigned customers.

Evidence notes

The vulnerability was published on June 4, 2026, and modified on June 8, 2026. The CVE record can be found at [cve-org]. Additional details are available at [nvd].

Official resources

CVE-2026-42547 was published on 2026-06-04T22:16:53.917Z and modified on 2026-06-08T16:16:39.387Z.