# CVE-2026-17597: Nexus Repository 3 - Server-Side Request Forgery via Email Configuration Verification

> An attacker with settings update permissions can trigger server-side requests to internal networks via email verification, potentially exposing internal service availability.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 Aug 2026
- **Updated:** 7 Aug 2026
- **Also known as:** GHSA-prvc-9rv9-3f72, MINI-5gg6-3pf8-cgw5, MINI-8jc8-pm5v-6f76

## What is CVE-2026-17597?

CVE-2026-17597 is a medium-severity server-side request forgery vulnerability in Sonatype Nexus Repository Manager, published on 7 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Nexus Repository 3 contains a Server-Side Request Forgery (SSRF) vulnerability in the email configuration verification feature. A user holding the nexus:settings:update permission could submit arbitrary host and port values to the email test/verification endpoint, causing the server to attempt outbound network connections to internal or otherwise restricted network addresses. Differences in the server's response could be used to infer whether internal hosts and ports are reachable. This issue affects Nexus Repository 3 CE/Pro versions up to and including 3.94.1, and is fixed in version 3.95.0.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-17597?

It affects 1 product.


Products: Sonatype Nexus Repository Manager.

## How do I fix CVE-2026-17597?

Upgrade to a fixed version.

## Is CVE-2026-17597 being exploited?

There is no known exploitation of CVE-2026-17597 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-2026-17597 and fix it if it is affected.

What it is: CVE-2026-17597 is a medium-severity server-side request forgery vulnerability in Sonatype Nexus Repository Manager, published on 7 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-17597 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-2026-17597/ (Markdown: https://insights.sbomify.com/CVE-2026-17597/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-17597
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-17597
- OSV: https://osv.dev/vulnerability/CVE-2026-17597

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-17597/
Summaries are generated and may contain mistakes; the official description above is the record.