Dashboard / CVE-2026-91147

CVE-2026-91147

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 62/100
Published: 2026-09-18 Modified: 2026-11-11 First seen: 2026-11-03 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

References & Advisories (7)

https://access.redhat.com/errata/RHSA-2026:94485
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:96250
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2479230
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.69%
Raw Score 0.006930
Percentile 53.5%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00693
2026-11-13
0.00693
2026-11-12
0.00693
2026-11-10
0.00641
2026-11-09
0.00641
2026-11-08
0.00641
2026-11-07
0.00641
2026-11-06
0.00641
2026-11-05
0.00641
2026-11-04
0.00517
2026-11-03
0.00404

Intelligence Sources

mitre ref →
nvd ref →

External Links