Vulnerability · Published Apr 8, 2026 · Assigned by Sonatype
CVE-2026-3438Nexus Repository 3 - Reflected Cross-Site Scripting (XSS) in ?describe Pages
Medium 5.1
In plain English
A medium-severity cross-site scripting in Nexus Repository from Sonatype. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 4.0)5.1Medium
Exploit odds (30 days)0.4%top 65.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A reflected cross-site scripting vulnerability exists in Sonatype Nexus Repository versions 3.0.0 through 3.90.2 that allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser through a specially crafted URL. Exploitation requires user interaction.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sonatype | Nexus Repository | 3.0.0 – before 3.91.0 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N