How severe is CVE-2026-0239?

CVE-2026-0239 has a CVSS 4.0 base score of 4.9, rated medium severity.

Is CVE-2026-0239 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-0239?

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

Does CVE-2026-0239 have an EU (EUVD) identifier?

Yes. CVE-2026-0239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30091.

When was CVE-2026-0239 published?

CVE-2026-0239 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-0239

CVE-2026-0239 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.9. 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-497.

Key facts

Severity: Medium (CVSS 4.0 base score 4.9)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30091
Weakness: CWE-497
Published: 2026-05-13
Last modified: 2026-06-17

Description

An information disclosure vulnerability in the Chronosphere Chronocollector enables an unauthenticated attacker with network access to the collector service to retrieve sensitive information.

Frequently asked questions

What is CVE-2026-0239?: An information disclosure vulnerability in the Chronosphere Chronocollector enables an unauthenticated attacker with network access to the collector service to retrieve sensitive information.
How severe is CVE-2026-0239?: CVE-2026-0239 has a CVSS 4.0 base score of 4.9, rated medium severity.
Is CVE-2026-0239 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-0239?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-0239 have an EU (EUVD) identifier?: Yes. CVE-2026-0239 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30091.
When was CVE-2026-0239 published?: CVE-2026-0239 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://security.paloaltonetworks.com/CVE-2026-0239

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