CVE-2026-66378: An authenticated user without repository read permission may access private NuGet metadata under specific cond

Routine

MEDIUM 4.3UPGRADE

CVE-2026-66378 is a medium-severity flaw (CVSS 4.3) affecting artifactory. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-862
Published	2026-08-12
Last modified	2026-10-23

Publisher (CNA): JFrog · Vendor: jfrog

Am I affected?

Timeline

2026-08-12 15:18 UTCPublished CVE record published
2026-10-23 20:10 UTCUpdated Record last modified

jfrog artifactory UPGRADE

Affected: < 7.146.35 · >= 7.161.0 and < 7.161.16

Fixed in: 7.146.35, 7.161.16

Safe to downgrade to: a release before 7.161.0

1. Check installed version

apt-cache policy artifactory || rpm -q artifactory || artifactory --version

2. UPGRADE to 7.146.35 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade artifactory

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade artifactory

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 7.161.0 (Debian / Ubuntu)

apt-cache madison artifactory sudo apt install artifactory=<VERSION_BEFORE_7.161.0> sudo apt-mark hold artifactory

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list artifactory sudo dnf downgrade artifactory-<VERSION_BEFORE_7.161.0> sudo dnf versionlock add artifactory

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-66378?

artifactory: upgrade to 7.146.35, 7.161.16. Exact commands for each OS are on this page.

Is CVE-2026-66378 being exploited?

CVE-2026-66378 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-66378 affect?

CVE-2026-66378 affects artifactory. Severity is medium (CVSS 4.3). An authenticated user without repository read permission may access private NuGet metadata under specific conditions.

How urgent is CVE-2026-66378?

Priority 20/100. No elevated risk signals yet.

Related CVEs

CVE-2026-42016 HIGH 8.1 EXPLOITED UPGRADE JFrog Artifactory Incorrect Authorization Vulnerability
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CVE-2026-66014 HIGH 8.8 UPGRADE JFrog Artifactory contains an authentication handling weakness in internal request processing that, under spec
CVE-2026-42017 HIGH 8.8 UPGRADE An event-handling weakness in JFrog Artifactory could expose privileged authorization material to a lower-priv

References

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