How severe is CVE-2026-42329?

CVE-2026-42329 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-42329 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42329?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-42329 have an EU (EUVD) identifier?

Yes. CVE-2026-42329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34325.

When was CVE-2026-42329 published?

CVE-2026-42329 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-42329

CVE-2026-42329 is a medium-severity vulnerability with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-602.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34325
Weakness: CWE-602
Published: 2026-06-04
Last modified: 2026-06-17

Description

Iris is a web collaborative platform that helps incident responders share technical details during investigations. Versions prior to 2.4.28 contain a weakness where an attacker can misuse it to redirect the user to a malicious website controlled by an attacker. Version 2.4.28 fixes the issue.

Frequently asked questions

What is CVE-2026-42329?: Iris is a web collaborative platform that helps incident responders share technical details during investigations. Versions prior to 2.4.28 contain a weakness where an attacker can misuse it to redirect the user to a malicious website controlled by an attacker. Version 2.4.28 fixes the issue.
How severe is CVE-2026-42329?: CVE-2026-42329 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-42329 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-42329?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42329 have an EU (EUVD) identifier?: Yes. CVE-2026-42329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34325.
When was CVE-2026-42329 published?: CVE-2026-42329 was published on 2026-06-04 and last updated on 2026-06-17.

References

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