CVE-2026-91147

MEDIUM CVSS 3.1: 5.9 EPSS 0.51%
Updated Sep 22, 2026
Red Hat
Parameter Value
CVSS 5.9 (MEDIUM)
Type CWE-617
Vendor Red Hat
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products

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