CVE-2026-17595: Nexus Repository 3 did not fully sandbox JEXL expressions used in Content Selectors

Routine

LOW 2.7UPGRADE

CVE-2026-17595 is a low-severity flaw (CVSS 2.7) affecting nexus repository manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Nexus Repository 3 did not fully sandbox JEXL expressions used in Content Selectors. An account holding the nexus:selectors:create permission could construct an expression that read Java object properties not intended to be exposed to the expression engine, disclosing internal JVM class metadata such as class and classloader names. This issue does not permit method invocation, object construction, or arbitrary code execution. This has been fixed

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.7 (Low)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-497
Published	2026-08-07
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

2026-08-07 17:16 UTCPublished CVE record published
2026-09-22 16:59 UTCUpdated Record last modified

sonatype nexus repository manager UPGRADE

Affected: >= 3.15.0 and < 3.95.0

Fixed in: 3.95.0

Safe to downgrade to: a release before 3.15.0

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 3.15.0 (Debian / Ubuntu)

apt-cache madison nexus-repository-manager sudo apt install nexus-repository-manager=<VERSION_BEFORE_3.15.0> 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_3.15.0> 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-2026-17595?

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

Is CVE-2026-17595 being exploited?

CVE-2026-17595 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-2026-17595 affect?

CVE-2026-17595 affects nexus repository manager. Severity is low (CVSS 2.7). Nexus Repository 3 did not fully sandbox JEXL expressions used in Content Selectors. An account holding the nexus:selectors:create permission could construct an expression that read Java object properties not intended to be exposed to the e

How urgent is CVE-2026-17595?

Priority 18/100. No elevated risk signals yet.

Software pages

Java vulnerabilities · Sonatype Nexus vulnerabilities

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References

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