# CVE-2025-59088: Python-kdcproxy: unauthenticated ssrf via realm‑controlled dns srv

> An attacker can exploit unauthenticated SSRF in Python-kdcproxy to probe internal networks and exfiltrate data via DNS SRV records.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 12 Nov 2025
- **Updated:** 30 Jun 2026
- **Also known as:** AZL-70174, AZL-70184, DEBIAN-CVE-2025-59088, GHSA-crfg-8xhr-7q4w, UBUNTU-CVE-2025-59088

## What is CVE-2025-59088?

CVE-2025-59088 is a high-severity server-side request forgery vulnerability in Red Hat Enterprise Linux 10, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. This creates a server-side request forgery vulnerability, since an attacker could send a request for a realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where
the "use_dns" setting is explicitly set to false are not affected.

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

## Which versions are affected by CVE-2025-59088?


## How do I fix CVE-2025-59088?

Apply the vendor's patch.

## Is CVE-2025-59088 being exploited?

There is no known exploitation of CVE-2025-59088 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-59088 and fix it if it is affected.

What it is: CVE-2025-59088 is a high-severity server-side request forgery vulnerability in Red Hat Enterprise Linux 10, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-59088 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. 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-2025-59088/ (Markdown: https://insights.sbomify.com/CVE-2025-59088/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-59088
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-59088
- OSV: https://osv.dev/vulnerability/CVE-2025-59088

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-59088/
Summaries are generated and may contain mistakes; the official description above is the record.