How severe is CVE-2021-29159?

CVE-2021-29159 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-29159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29159?

CVE-2021-29159 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29159?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-29159 published?

CVE-2021-29159 was published on 2021-04-28 and last updated on 2026-06-17.

CVE-2021-29159

CVE-2021-29159 is a medium-severity vulnerability in Sonatype Nexus Repository Manager with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sonatype Nexus Repository Manager
Published: 2021-04-28
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) vulnerability has been discovered in Nexus Repository Manager 3.x before 3.30.1. An attacker with a local account can create entities with crafted properties that, when viewed by an administrator, can execute arbitrary JavaScript in the context of the NXRM application.

Frequently asked questions

What is CVE-2021-29159?: A cross-site scripting (XSS) vulnerability has been discovered in Nexus Repository Manager 3.x before 3.30.1. An attacker with a local account can create entities with crafted properties that, when viewed by an administrator, can execute arbitrary JavaScript in the context of the NXRM application.
How severe is CVE-2021-29159?: CVE-2021-29159 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-29159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29159?: CVE-2021-29159 affects Sonatype Nexus Repository Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-29159 published?: CVE-2021-29159 was published on 2021-04-28 and last updated on 2026-06-17.

References

Affected products (1)

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

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