HOMEVULNERABILITIESCVE-2026-42547
MEDIUM

CVE-2026-42547

CWE-863Published: June 4, 2026· Updated: Jun 8, 2026

5.4
CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2026-42547 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (3)

→
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

Quick Facts

CVE IDCVE-2026-42547
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessCWE-863
CISA KEVNo
PublishedJun 4, 2026

Related CVEs (CWE-863)

CVE-2026-48303
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CVE-2026-44330
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CVE-2026-48286
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CVE-2026-41283
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CVE-2026-41050
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CVE-2026-43948
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-42547 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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