How severe is CVE-2020-15870?

CVE-2020-15870 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-2020-15870 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-2020-15870?

CVE-2020-15870 primarily affects Sonatype Nexus Repository Manager 3. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-15870?

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

When was CVE-2020-15870 published?

CVE-2020-15870 was published on 2020-07-31 and last updated on 2026-06-17.

CVE-2020-15870

CVE-2020-15870 is a medium-severity vulnerability in Sonatype Nexus Repository Manager 3 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% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sonatype Nexus Repository Manager 3
Published: 2020-07-31
Last modified: 2026-06-17

Description

Sonatype Nexus Repository Manager OSS/Pro versions before 3.25.1 allow XSS (Issue 2 of 2).

Frequently asked questions

What is CVE-2020-15870?: Sonatype Nexus Repository Manager OSS/Pro versions before 3.25.1 allow XSS (Issue 2 of 2).
How severe is CVE-2020-15870?: CVE-2020-15870 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-2020-15870 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-2020-15870?: CVE-2020-15870 primarily affects Sonatype Nexus Repository Manager 3. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-15870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-15870 published?: CVE-2020-15870 was published on 2020-07-31 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:sonatype:nexus_repository_manager_3:*:*:*:*:oss:*:*:*
cpe:2.3:a:sonatype:nexus_repository_manager_3:*:*:*:*:pro:*:*:*

More vulnerabilities in Sonatype Nexus Repository Manager 3

CVE-2020-15871 — High (CVSS 8.8): Sonatype Nexus Repository Manager OSS/Pro version before 3.25.1 allows Remote Code Execution.
CVE-2020-11753 — High (CVSS 8.8): An issue was discovered in Sonatype Nexus Repository Manager in versions 3.21.1 and 3.22.0. It is possible for a user…
CVE-2021-40143 — High (CVSS 8.2): Sonatype Nexus Repository 3.x through 3.33.1-01 is vulnerable to an HTTP header injection. By sending a crafted HTTP…
CVE-2020-15869 — Medium (CVSS 5.4): Sonatype Nexus Repository Manager OSS/Pro versions before 3.25.1 allow XSS (issue 1 of 2).
CVE-2021-29158 — Medium (CVSS 4.9): Sonatype Nexus Repository Manager 3 Pro up to and including 3.30.0 has Incorrect Access Control.

All CVEs affecting Sonatype Nexus Repository Manager 3 →

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