# 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.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N`)
- **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:** Yes
- **Published:** 7 Aug 2026
- **Updated:** 7 Aug 2026
- **Also known as:** GHSA-v8cg-rx44-f2ff, MINI-9w77-q688-2hqm, MINI-f24j-49rp-5p9x

## 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 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-17596?

It affects 1 product.


Products: Sonatype Nexus Repository Manager.

## How do I fix CVE-2026-17596?

Upgrade to a fixed version.

## 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](https://insights.sbomify.com/CVE-2019-7238/): Sonatype Nexus Repository Manager Incorrect Access Control (critical 9.8, exploited in the wild)
- [CVE-2019-9629](https://insights.sbomify.com/CVE-2019-9629/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2017-17717](https://insights.sbomify.com/CVE-2017-17717/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2026-3199](https://insights.sbomify.com/CVE-2026-3199/): Nexus Repository 3 - Authenticated Remote Code Execution via Task Property Injection (critical 9.4)
- [CVE-2026-5189](https://insights.sbomify.com/CVE-2026-5189/): Nexus Repository 3 - Hardcoded Credential in Internal Database Component (critical 9.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-17596 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-17596 in the wild and no public exploit code.

Affected product: Sonatype Nexus Repository Manager. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-17596/ (Markdown: https://insights.sbomify.com/CVE-2026-17596/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-17596
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-17596
- OSV: https://osv.dev/vulnerability/CVE-2026-17596

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-17596/
Summaries are generated and may contain mistakes; the official description above is the record.