Auth bypass in Gocd
CVE-2026-55632
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Gocd — versions >= 20.2.0, < 26.1.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-55632?
- CVE-2026-55632 is a medium-severity vulnerability in Gocd, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-09-23.
- How severe is CVE-2026-55632?
- Medium severity. CVSS v3 base score is 4.3 out of 10.