CVE-2026-55632 GoCD is vulnerable to authorization bypass via pipeline structure API
Authenticated users can bypass authorization checks to enumerate usernames and roles via the pipeline structure API, facilitating targeted attacks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55632?
CVE-2026-55632 is a medium-severity missing authorization vulnerability in gocd, published on 23 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2026-55632?
How do I fix CVE-2026-55632?
No fix has been published for CVE-2026-55632 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-55632 being exploited?
There is no known exploitation of CVE-2026-55632 in the wild and no public exploit code.
Sources
Also known as GHSA-57pf-j652-c3c9.