CVE-2026-17596 Nexus Repository 3 - Stored Cross-Site Scripting (XSS) via Blob Store Name
An attacker with blob store permissions can inject malicious scripts via blob store names, leading to XSS execution in other users' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-17596?
CVE-2026-17596 is a medium-severity cross-site scripting vulnerability in Sonatype Nexus Repository Manager, published on 7 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Nexus Repository 3 was found to be vulnerable to stored cross-site scripting (XSS). A user with the nexus:blobstores:create or nexus:blobstores:update permission could set a blob store name containing malicious script content, which would later execute in the browser of another user viewing system health-check status. This issue has been fixed in version 3.95.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-17596?
It affects 1 product.
Products include Sonatype Nexus Repository Manager.
How do I fix CVE-2026-17596?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-17596 being exploited?
There is no known exploitation of CVE-2026-17596 in the wild and no public exploit code.
Other vulnerabilities in Sonatype Nexus Repository Manager
- CVE-2019-7238 Sonatype Nexus Repository Manager Incorrect Access Control
- CVE-2019-9629 Hardcoded credentials in n/a
- CVE-2017-17717 Hardcoded credentials in n/a
- CVE-2026-3199 Nexus Repository 3 - Authenticated Remote Code Execution via Task Property Injection
- CVE-2026-5189 Nexus Repository 3 - Hardcoded Credential in Internal Database Component
Sources
Also known as GHSA-v8cg-rx44-f2ff, MINI-9w77-q688-2hqm, MINI-f24j-49rp-5p9x.