# CVE-2026-11403: Sonatype Nexus Repository Manager insufficient entropy in API key generation

Source: https://junglewise.ai/threats/cve-2026-11403-sonatype-nexus-repository-manager-insufficient-entropy-in-api-key  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-14. Updated: 2026-07-14  
License: CC BY 4.0 with a link back

CVE-2026-11403 · Severity: info · CVSS 8.7 · Published 2026-07-14

Sonatype Nexus Repository Manager, a tool used by software development teams to store and manage their code packages, contains a security flaw in how it generates certain API keys. An attacker could potentially predict or obtain these keys to gain unauthorized access to repository operations, acting as a legitimate user. This could lead to the unauthorized viewing or downloading of private software components and intellectual property.

Technologies: [Sonatype Nexus Repository Manager](https://junglewise.ai/threats/technologies/nexus-repository-manager). Vendors: [Sonatype](https://junglewise.ai/threats/vendors/sonatype).

## Quick answers

**Is CVE-2026-11403 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11403 being exploited in the wild.

**How severe is CVE-2026-11403?** Informational severity, with a CVSS score of 8.7, published 14 July 2026.

**Which products and versions are affected?** Sonatype Nexus Repository Manager 3.0.0 up to 3.92.3.

**Is there a fix for CVE-2026-11403?** A patch was published on 2026-07-14: Fixed in Sonatype Nexus Repository 3.93.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-11403 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-11403?** Check whether you run Sonatype Nexus Repository Manager at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An insufficient entropy vulnerability (CWE-331) exists in the format-specific API key generation process of Sonatype Nexus Repository Manager. The flaw affects NuGet API Keys, Docker Bearer Tokens, and npm Bearer Tokens. A remote, unauthenticated attacker can exploit this to gain unauthorized access to repository operations, provided the specific API key realm is enabled and the target user has an active key. The vulnerability is addressed in version 3.93.0.

## Affected products

- Sonatype Nexus Repository Manager 3.0.0 up to 3.92.3

## Timeline

- 2026-07-14: advisory: Initial disclosure by Sonatype and NVD publication.
- 2026-07-14: patched: Fixed in Sonatype Nexus Repository 3.93.0.

## References

- [https://help.sonatype.com/en/sonatype-nexus-repository-3-93-0-release-notes.html](https://help.sonatype.com/en/sonatype-nexus-repository-3-93-0-release-notes.html)
- [https://support.sonatype.com/hc/en-us/articles/52347011450515/](https://support.sonatype.com/hc/en-us/articles/52347011450515/)

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