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CVE-2026-17600: Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached

35
Routine
HIGH 8.8UPGRADE

CVE-2026-17600 is a high-severity flaw (CVSS 8.8) affecting nexus repository manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached permissions when that user's account was deleted, deactivated, or had its password changed. A user whose account was already logged in at the time of one of these actions could continue using their existing session to interact with the repository as though the account were still active, until that session independently expired. Depending

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.2% (top 85%)
CISA exploited listNo
WeaknessCWE-613
Published2026-08-07
Last modified2026-10-23
Publisher (CNA): Sonatype · Vendor: sonatype

Am I affected?

Timeline

sonatype nexus repository manager UPGRADE
Affected: >= 3.0.0 and < 3.95.0
Fixed in: 3.95.0
Safe to downgrade to: a release before 3.0.0
1. Check installed version
apt-cache policy nexus-repository-manager || rpm -q nexus-repository-manager || nexus-repository-manager --version
2. UPGRADE to 3.95.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade nexus-repository-manager
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade nexus-repository-manager
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 3.0.0 (Debian / Ubuntu)
apt-cache madison nexus-repository-manager sudo apt install nexus-repository-manager=<VERSION_BEFORE_3.0.0> sudo apt-mark hold nexus-repository-manager
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list nexus-repository-manager sudo dnf downgrade nexus-repository-manager-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add nexus-repository-manager
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.

Exact fixes by distribution

Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source
sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3
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-2026-17600?

nexus repository manager: upgrade to 3.95.0. Exact commands for each OS are on this page.

Is CVE-2026-17600 being exploited?

CVE-2026-17600 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-2026-17600 affect?

CVE-2026-17600 affects nexus repository manager. Severity is high (CVSS 8.8). Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached permissions when that user's account was deleted, deactivated, or had its password changed. A user whose account was already logg

How urgent is CVE-2026-17600?

Priority 35/100. High severity

Related CVEs

References

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