CVE-2026-77122: An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{reposito

Routine

MEDIUM 4.3UPGRADE

CVE-2026-77122 is a medium-severity flaw (CVSS 4.3) affecting nexus repository manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3 allowed an account holding read or browse permission on a group repository to retrieve metadata for member repositories on which it held no direct permission, by requesting the endpoint directly for the member repository name. For proxy repositories, the disclosed metadata includes the configured re

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 80%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-09-02
Last modified	2026-09-22

Publisher (CNA): Sonatype · Vendor: sonatype

Last updated 2026-09-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-02 18:21 UTCPublished CVE record published
2026-09-22 17:25 UTCUpdated Record last modified

sonatype nexus repository manager UPGRADE

Affected: >= 3.38.0 and < 3.96.0

Fixed in: 3.96.0

Safe to downgrade to: a release before 3.38.0

1. Check installed version

apt-cache policy nexus-repository-manager || rpm -q nexus-repository-manager || nexus-repository-manager --version

2. UPGRADE to 3.96.0 (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 3.38.0 (Debian / Ubuntu)

apt-cache madison nexus-repository-manager sudo apt install nexus-repository-manager=<VERSION_BEFORE_3.38.0> 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_3.38.0> 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.

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-2026-77122?

nexus repository manager: upgrade to 3.96.0. Exact commands for each OS are on this page.

Is CVE-2026-77122 being exploited?

CVE-2026-77122 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-2026-77122 affect?

CVE-2026-77122 affects nexus repository manager. Severity is medium (CVSS 4.3). An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3 allowed an account holding read or browse permission on a group repository to retrieve met

How urgent is CVE-2026-77122?

Priority 20/100. No elevated risk signals yet.

Software pages

Sonatype Nexus vulnerabilities

Related CVEs

CVE-2026-5189 CRITICAL 9.8 UPGRADE CWE-798: Use of Hard-coded Credentials in Sonatype Nexus Repository Manager versions 3.0.0 through 3.70.5 allo
CVE-2026-7308 MEDIUM 5.4 UPGRADE An authenticated user with upload permission to a hosted repository can store content that causes arbitrary Ja
CVE-2026-3048 LOW 3.8 UPGRADE An authenticated administrator who configures or tests LDAP connectivity in Sonatype Nexus Repository Manager
CVE-2026-3329 HIGH 7.5 UPGRADE A remote unauthenticated attacker may be able to conduct credential-guessing attacks against user accounts in
CVE-2026-10741 MEDIUM 4.9 UPGRADE Sonatype Nexus Repository Manager before 3.93.0 contains an authorization vulnerability in the proxy repositor

References

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