CVE-2026-3438

Medium

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.

SeverityMedium

CVSS6.1

Exploit probability—

ProductSonatype Nexus Repository Manager

PublishedApr 8, 2026

First seenApr 8, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

sonatype nexus_repository_manager3.91.0 or later

Patches

help.sonatype.com/en/sonatype-nexus-repository-3-91-0-release-notes.html

Vendor advisories

support.sonatype.com/hc/en-us/articles/50609137161363

Affected products

Product	Affected versions	Fixed in
sonatype nexus_repository_manager	3.0.0 ≤ v < 3.91.0	3.91.0

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