# CVE-2026-113372: Sonatype Nexus Repository 3 YUM private key disclosure to read-only accounts

Source: https://junglewise.ai/threats/cve-2026-113372-sonatype-nexus-repository-3-returns-the-private-signing-key-of-a  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-04. Updated: 2026-11-04  
License: CC BY 4.0 with a link back

CVE-2026-113372 · Severity: info · Published 2026-11-04

Sonatype Nexus Repository 3 is a software component repository that manages packages and artifacts for organizations. A privilege escalation flaw exposes the private signing key for YUM proxy or group repositories to users with only read-level access, allowing them to forge repository metadata and potentially inject malicious packages without requiring edit privileges.

Technologies: [Sonatype Nexus Repository 3](https://junglewise.ai/threats/technologies/nexus-repository-3). Vendors: [Sonatype](https://junglewise.ai/threats/vendors/sonatype).

## Quick answers

**Is CVE-2026-113372 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-113372 being exploited in the wild.

**How severe is CVE-2026-113372?** Informational severity, published 4 November 2026.

**Which products and versions are affected?** Sonatype Nexus Repository 3.

**Is there a fix for CVE-2026-113372?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-113372 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-113372?** Check whether you run Sonatype Nexus Repository 3. 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

The vulnerability is an authorization bypass where Nexus Repository 3 incorrectly returns YUM repository private signing keys to accounts holding only read privilege for repository administration. An attacker with such read access can retrieve the private key without needing edit permissions, then use it to cryptographically sign malicious YUM repository metadata. The attack requires authentication as an account with at least read privilege on the target repository.

## Affected products

- Sonatype Nexus Repository 3

## Timeline

- 2026-11-04: disclosed

## References

- [https://help.sonatype.com/en/sonatype-nexus-repository-3-98-0-release-notes.html](https://help.sonatype.com/en/sonatype-nexus-repository-3-98-0-release-notes.html)
- [https://support.sonatype.com/hc/en-us/articles/56612283547539/](https://support.sonatype.com/hc/en-us/articles/56612283547539/)

## Related threats

- [Sonatype Nexus Repository 3 authorization bypass in Rut Auth capability](https://junglewise.ai/threats/cve-2026-113374-sonatype-nexus-repository-3-does-not-require-realm)
- [Sonatype Nexus Repository 3 signing passphrase disclosure in REST endpoint](https://junglewise.ai/threats/cve-2026-113371-sonatype-nexus-repository-3-returns-the-signing-passphrase-of-an)
- [Sonatype Nexus Repository 3 SQL injection in Reindex Search Tables task](https://junglewise.ai/threats/cve-2026-113370-sonatype-nexus-repository-3-contains-a-sql-injection)
- [Sonatype Nexus Repository stored XSS in OCI manifest artifact type](https://junglewise.ai/threats/cve-2026-113369-sonatype-nexus-repository-3-allows-a-user-account-that-can-push)
- [Sonatype Nexus Repository 3 privilege escalation via unauthorized repository access](https://junglewise.ai/threats/cve-2026-113368-sonatype-nexus-repository-3-does-not-check-that-a-user-account)