What’s Vulnerable › Vulnerabilities

CVE-2026-55632: GoCD is vulnerable to authorization bypass via pipeline structure API

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-23 · updated 2026-09-30
• Weakness: CWE-863

Description

GoCD is a continuous deliver server. From 20.2.0 until 26.1.0, the internal pipeline structure API used for autocompletion while editing pipeline, template, environment, and user-preference configuration returns its users-and-roles mode to regular authenticated users without requiring an administrator role. A lower-privileged user can enumerate configured user names and available role names, which can facilitate attacks against those users. The response does not reveal which roles are assigned to each user, and the endpoint cannot modify data. This issue is fixed in version 26.1.0.

Affected products

• gocd: from 20.2.0, < 26.1.0

References

• https://github.com/gocd/gocd/commit/c93d9e7b32b64257725a7d1c6f148fb571c86c7e
• https://github.com/gocd/gocd/releases/tag/26.1.0
• https://github.com/gocd/gocd/security/advisories/GHSA-57pf-j652-c3c9
• https://www.gocd.org/releases/#26-1-0

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