What is CVE-2020-15870?

CVE-2020-15870 is a medium-severity vulnerability in Sonatype Nexus Repository Manager, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-07-31.

How severe is CVE-2020-15870?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Sonatype Nexus Repository Manager

CVE-2020-15870

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

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-07-31 · last modified 2026-09-22.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.6th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support.sonatype.com (Vendor Advisory)
support.sonatype.com/hc/en-us/articles/360051424754 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-15870?: CVE-2020-15870 is a medium-severity vulnerability in Sonatype Nexus Repository Manager, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-07-31.
How severe is CVE-2020-15870?: Medium severity. CVSS v3 base score is 6.1 out of 10.