How severe is CVE-2026-5189?

CVE-2026-5189 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-5189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5189?

CVE-2026-5189 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5189?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-5189 have an EU (EUVD) identifier?

Yes. CVE-2026-5189 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23031.

When was CVE-2026-5189 published?

CVE-2026-5189 was published on 2026-04-15 and last updated on 2026-09-18.

CVE-2026-5189

CVE-2026-5189 is a critical-severity vulnerability in Sonatype Nexus Repository Manager with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.2
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23031
Weakness: CWE-798
Affected product: Sonatype Nexus Repository Manager
Published: 2026-04-15
Last modified: 2026-09-18

Description

CWE-798: Use of Hard-coded Credentials in Sonatype Nexus Repository Manager versions 3.0.0 through 3.70.5 allows an unauthenticated attacker with network access to gain unauthorized read/write access to the internal database and execute arbitrary OS commands as the Nexus process user. Exploitation requires the non-default nexus.orient.binaryListenerEnabled=true configuration to be enabled.

Frequently asked questions

What is CVE-2026-5189?: CWE-798: Use of Hard-coded Credentials in Sonatype Nexus Repository Manager versions 3.0.0 through 3.70.5 allows an unauthenticated attacker with network access to gain unauthorized read/write access to the internal database and execute arbitrary OS commands as the Nexus process user. Exploitation requires the non-default nexus.orient.binaryListenerEnabled=true configuration to be enabled.
How severe is CVE-2026-5189?: CVE-2026-5189 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-5189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5189?: CVE-2026-5189 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-5189 have an EU (EUVD) identifier?: Yes. CVE-2026-5189 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23031.
When was CVE-2026-5189 published?: CVE-2026-5189 was published on 2026-04-15 and last updated on 2026-09-18.

References

Affected products (1)

cpe:2.3:a:sonatype:nexus_repository_manager:*:*:*:*:*:*:*:*

More vulnerabilities in Sonatype Nexus Repository Manager

CVE-2019-9629 — Critical (CVSS 9.8): Sonatype Nexus Repository Manager before 3.17.0 establishes a default administrator user with weak defaults (fixed…
CVE-2019-7238 — Critical (CVSS 9.8): Sonatype Nexus Repository Manager before 3.15.0 has Incorrect Access Control.
CVE-2017-17717 — Critical (CVSS 9.8): Sonatype Nexus Repository Manager through 2.14.5 has weak password encryption with a hardcoded CMMDwoV value in the…
CVE-2026-17603 — High (CVSS 8.8): Nexus Repository 3 did not sufficiently restrict which HikariCP connection-pool properties could be set through the…
CVE-2026-17600 — High (CVSS 8.8): Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached…
CVE-2026-3199 — High (CVSS 8.8): A vulnerability in the task management component of Sonatype Nexus Repository versions 3.22.1 through 3.90.2 allows an…

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