# CVE-2026-26379: Server-side request forgery in n/a

> Authenticated attackers can exploit SSRF in Koha's Z39.50/SRU configuration to scan internal networks and identify running services.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Jun 2026
- **Updated:** 4 Jun 2026
- **Also known as:** GHSA-7pjj-942q-wrwg

## What is CVE-2026-26379?

CVE-2026-26379 is a medium-severity server-side request forgery vulnerability in n/a, published on 3 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via the Z39.50/SRU server configuration. This allows authenticated attackers to perform internal network scanning and identify running services by analyzing server response times.

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

## Which versions are affected by CVE-2026-26379?

It affects 1 product.


Products: Koha Koha.

## How do I fix CVE-2026-26379?

No fix has been published for CVE-2026-26379 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-26379 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26379 exists.

## Other vulnerabilities in n/a

- [CVE-2014-1924](https://insights.sbomify.com/CVE-2014-1924/): SQL injection in n/a (critical 9.8)
- [CVE-2014-1925](https://insights.sbomify.com/CVE-2014-1925/): SQL injection in n/a (critical 9.8)
- [CVE-2015-4633](https://insights.sbomify.com/CVE-2015-4633/): SQL injection in n/a (critical 9.8)
- [CVE-2024-28739](https://insights.sbomify.com/CVE-2024-28739/): Command injection in n/a (critical 9.6)
- [CVE-2024-24337](https://insights.sbomify.com/CVE-2024-24337/): Code injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-26379 and fix it if it is affected.

What it is: CVE-2026-26379 is a medium-severity server-side request forgery vulnerability in n/a, published on 3 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26379 exists.

Affected product: n/a. 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-2026-26379/ (Markdown: https://insights.sbomify.com/CVE-2026-26379/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-26379
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-26379
- OSV: https://osv.dev/vulnerability/CVE-2026-26379

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-26379/
Summaries are generated and may contain mistakes; the official description above is the record.