CVE-2026-3438

MEDIUMCVSS 6.1/10EPSS 0.46%

Last modified

CVE-2026-3438 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

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.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
SonatypeNexus Repository Manager>= 3.0.0, < 3.91.0

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-3438?
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.
How severe is CVE-2026-3438?
CVE-2026-3438 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.
How do I fix CVE-2026-3438?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST