CVE-2026-11403: A vulnerability in Sonatype Nexus Repository Manager's format-specific API key generation may allow a remote a

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-11403 is a high-severity flaw (CVSS 7.5) affecting nexus repository manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in Sonatype Nexus Repository Manager's format-specific API key generation may allow a remote attacker to gain unauthorized access to repository operations as a targeted user. A format-specific API key realm (NuGet API Key, Docker Bearer Token, or npm Bearer Token) must be enabled and the targeted user must have an active API key for this vulnerability to be exploitable.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-331
Published	2026-07-14
Last modified	2026-10-24

Publisher (CNA): Sonatype · Vendor: sonatype

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-14 16:16 UTCPublished CVE record published
2026-10-24 21:10 UTCUpdated Record last modified

sonatype nexus repository manager UPGRADE

Affected: >= 3.0.0 and < 3.93.0

Fixed in: 3.93.0

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 3.93.0 (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.

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-2026-11403?

nexus repository manager: upgrade to 3.93.0. Exact commands for each OS are on this page.

Is CVE-2026-11403 being exploited?

CVE-2026-11403 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-2026-11403 affect?

CVE-2026-11403 affects nexus repository manager. Severity is high (CVSS 7.5). A vulnerability in Sonatype Nexus Repository Manager's format-specific API key generation may allow a remote attacker to gain unauthorized access to repository operations as a targeted user. A format-specific API key realm (NuGet API Key, D

How urgent is CVE-2026-11403?

Priority 37/100. High severity; Remotely exploitable, no login, no user action

Software pages

Docker vulnerabilities · Sonatype Nexus vulnerabilities

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References

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