CVE-2026-91147
Cockpit: cockpit: denial of service in `cockpit-ws` due to url-root handling without a trailing slash
- State
- Published
- Severity
- 5.9 Medium
- Published
- Sep 18, 2026
- Updated
- Oct 16, 2026
- Reserved
- Sep 14, 2026
Description
A flaw was found in `cockpit-ws`. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a specially crafted request. When the `WebService.UrlRoot` is configured and a request is made to the exact URL-root prefix without a trailing slash, `cockpit-ws` can terminate unexpectedly. This issue leads to the unavailability of the Cockpit web service.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-617 Reachable Assertion
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat | |
Red Hat OpenShift Dev SpacesRed Hat | |
Red Hat OpenShift Dev SpacesRed Hat | |
Red Hat OpenShift Dev SpacesRed Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-91147vdb-entry
- RHBZ#2479230issue-tracking
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