How severe is CVE-2026-66378?

CVE-2026-66378 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-66378 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-66378?

CVE-2026-66378 affects Jfrog Artifactory. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-66378?

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

When was CVE-2026-66378 published?

CVE-2026-66378 was published on 2026-08-12 and last updated on 2026-09-02.

CVE-2026-66378

CVE-2026-66378 is a medium-severity vulnerability in Jfrog Artifactory with a CVSS 3.x base score of 4.3. 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Jfrog Artifactory
Published: 2026-08-12
Last modified: 2026-09-02

Description

An authenticated user without repository read permission may access private NuGet metadata under specific conditions.

Frequently asked questions

What is CVE-2026-66378?: An authenticated user without repository read permission may access private NuGet metadata under specific conditions.
How severe is CVE-2026-66378?: CVE-2026-66378 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-66378 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-66378?: CVE-2026-66378 affects Jfrog Artifactory. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-66378?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-66378 published?: CVE-2026-66378 was published on 2026-08-12 and last updated on 2026-09-02.

References

Affected products (1)

cpe:2.3:a:jfrog:artifactory:*:*:*:*:*:*:*:*

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