CVE-2026-42539

IRIS has an Excessive Data Exposure issue

Published Jun 4, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

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.

Analysis

Technical impact

IRIS is a web collaborative platform for incident responders. A defect in versions before 2.4.28 allows the application to return sensitive data that is not needed by the client. This excessive data exposure can lead to unintended disclosure of confidential information. The weakness maps to CWE‑201, which is a data privacy and exposure issue.

Affected Systems

The vulnerability affects the IRIS Web component produced by dfir‑iris. All installations running a version earlier than 2.4.28 are impacted; the fix is integrated in version 2.4.28.

Risk and Exploitability

The CVSS score of 6.5 indicates moderate severity. No EPSS data is available, and the vulnerability is not yet in the CISA KEV catalog. An attacker with access to the normal web interface can trigger the erroneous data exposure, potentially compromising confidentiality. Prompt patching reduces the risk of accidental data leakage.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

dfir-iris

iris-web

affected

Version	Status	Constraints
`< 2.4.28`	affected	—

No data.

Vendor Product Versions

Dfir-iris

Iris

Version	Status	Scheme	Platform
`[0,2.4.28)`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade IRIS Web to version 2.4.28 or later.
Restrict network access to the IRIS Web instance so only authorized responders can communicate with it.
Implement least‑privilege data handling to ensure clients receive only the data needed for their operations.

Generated by OpenCVE AI on June 4, 2026 at 22:21 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.232% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
http://www.openwall.com/lists/oss-security/2026/05/19/9
https://github.com/dfir-iris/iris-web/security/advisories/GHSA-g588-5gmf-p5cx

History

Jun 8, 2026 5:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jun 5, 2026 7:45 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Dfir-iris Dfir-iris iris
Vendors & Products		Dfir-iris Dfir-iris iris

Jun 4, 2026 10:30 PM Added references View changes

Type	Values Removed	Values Added
References		http://www.openwall.com/lists/oss-security/2026/05/19/9

Jun 4, 2026 9:30 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		IRIS has an Excessive Data Exposure issue
Weaknesses		CWE-201
References		https://github.com/dfir-iris/iris-web/security/advisories/GHSA-g588-5gmf-p5cx
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}`