CVE-2026-14504: Nexus Repository 3 - Authorization Bypass in Component Upload API

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-14 · updated 2026-10-24
Weakness: CWE-862

Description

An authorization bypass in Nexus Repository 3's component upload API allowed a user with only read/browse privileges on a Swift, Terraform, or Conda hosted repository to upload arbitrary artifacts, bypassing the intended write-permission check.

Affected products

Sonatype Nexus Repository 3: from 3.88.0 before 3.94.0 — fixed in 3.94.0

How to fix

Upgrade to a fixed version: Sonatype Nexus Repository 3 3.94.0. Check the vendor advisory for mitigations.

References

https://help.sonatype.com/en/sonatype-nexus-repository-3-94-0-release-notes.html
https://support.sonatype.com/hc/en-us/articles/53137654741907

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