How severe is CVE-2026-0239?

CVE-2026-0239 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-0239 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.

What products are affected by CVE-2026-0239?

CVE-2026-0239 affects Paloaltonetworks Chronosphere Collector. See the affected-products list for the exact vulnerable versions.

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 2026-07-13.

CVE-2026-0239

CVE-2026-0239 is a medium-severity vulnerability in Paloaltonetworks Chronosphere Collector with a CVSS 3.x base score of 6.5. 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 3.x base score 6.5)
CVSS v4: 4.9
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30091
Weakness: CWE-497
Affected product: Paloaltonetworks Chronosphere Collector
Published: 2026-05-13
Last modified: 2026-07-13

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 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-0239 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.
What products are affected by CVE-2026-0239?: CVE-2026-0239 affects Paloaltonetworks Chronosphere Collector. See the affected-products list for the exact vulnerable versions.
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 2026-07-13.

References

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

Affected products (1)

cpe:2.3:a:paloaltonetworks:chronosphere_collector:*:*:*:*:*:*:*:*

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