CVE-2026-3438
MediumCVSS 5.1Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
Sonatype Nexus Repository versions 3.0.0 through 3.90.2 contain a reflected cross-site scripting vulnerability that allows unauthenticated remote attackers to execute arbitrary JavaScript in a victim's browser through a specially crafted URL. Exploitation requires user interaction.
Risk Assessment
The risk is the possibility of stealing credentials or hijacking user sessions via a malicious link.
Recommendation
It is recommended to update Sonatype Nexus Repository to version 3.90.3 or later.
Other vulnerabilities in Sonatype Nexus Repository
See all- CVE-2026-3199Critical
A vulnerability in the task management component of Sonatype Nexus Repository versions 3.22.1 through 3.90.2 allows an authenticated attacker with task creation permissions to execute arbitrary code, bypassing the nexus.scripts.allowCreation security control.
- CVE-2026-77125High
In Sonatype Nexus Repository 3, two blobstore group management REST API endpoints did not correctly enforce authorization. A user with only nexus:blobstores:create permission could convert an existing blobstore into a group blobstore, an action requiring nexus:blobstores:update. This could lead to unauthorized modification of blobstore configuration.
- CVE-2026-77124High
In affected versions of Nexus Repository 3, the script execution endpoint did not verify whether script execution had been administratively disabled. An account with script-execution permission could continue to run previously-created scripts even after nexus.scripts.allowCreation=false, undermining the expectation that this setting fully blocks script execution.
- CVE-2026-10748High
An authenticated user with the nx-licensing-create privilege can upload a specially crafted license file to execute arbitrary operating system commands as the Nexus process user in Sonatype Nexus Repository 3 versions before 3.92.0.
- CVE-2026-3329High
A vulnerability in Sonatype Nexus Repository allows a remote unauthenticated attacker to perform credential-guessing attacks against user accounts via authentication endpoints.
Original NVD description (English source)
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.