# CVE-2026-52742: GoCD is vulnerable to historical server configuration API authorization bypass

> Pipeline group administrators can access full server configuration, including sensitive keys, allowing rogue agent registration and potential privilege escalation.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Sep 2026
- **Updated:** 21 Sep 2026
- **Also known as:** GHSA-7xxx-fv46-vp7h

## What is CVE-2026-52742?

CVE-2026-52742 is a medium-severity missing authorization vulnerability in gocd, published on 21 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

GoCD is a continuous deliver server. From 12.3.1 until 26.1.0, legacy routes under /go/admin/restful/* expose historical full server configuration to pipeline group administrators instead of restricting responses to configuration for groups they administer. The disclosed configuration can include agent auto-registration keys, webhook invocation keys, encrypted material credentials, and GoCD administrator lists. A malicious pipeline group administrator can use disclosed agent registration data to connect a rogue compatible agent, which can create a higher-complexity path to receiving work or overwriting artifacts associated with other groups. Normal authenticated users are not affected, the endpoint does not modify server configuration, and deployments that restrict pipeline editing to full administrators or configuration repositories are not affected. This issue is fixed in version 26.1.0.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2026-52742?


## How do I fix CVE-2026-52742?

No fix has been published for CVE-2026-52742 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-52742 being exploited?

There is no known exploitation of CVE-2026-52742 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-52742 and fix it if it is affected.

What it is: CVE-2026-52742 is a medium-severity missing authorization vulnerability in gocd, published on 21 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-52742 in the wild and no public exploit code.

Affected product: gocd. 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-2026-52742/ (Markdown: https://insights.sbomify.com/CVE-2026-52742/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-52742
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-52742
- OSV: https://osv.dev/vulnerability/CVE-2026-52742

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-52742/
Summaries are generated and may contain mistakes; the official description above is the record.