CVE-2026-97665 Nexus Repository 3 - Missing Authorization on NuGet Symbol Package Upload
Attackers with read-only access can upload NuGet symbol packages to hosted repositories, bypassing write permission checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-97665?
CVE-2026-97665 is a high-severity missing authorization vulnerability in Sonatype Nexus Repository 3, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A missing authorization check in Nexus Repository 3's NuGet Components API upload path allows an account holding only repository read and browse privileges to upload and persist NuGet symbol packages (.snupkg) to a hosted repository, bypassing the write-permission check enforced for ordinary package uploads. Exploitation requires a hosted NuGet repository with Symbol Server enabled. If anonymous access is enabled, the built-in anonymous user holds read and browse privileges across all repositories by default, so this precondition can also be met without an authenticated account.
Weakness: CWE-862
Which versions are affected by CVE-2026-97665?
How do I fix CVE-2026-97665?
No fix has been published for CVE-2026-97665 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-97665 being exploited?
There is no known exploitation of CVE-2026-97665 in the wild and no public exploit code.
Sources
Also known as GHSA-g4qg-94xm-4cx6.