CVE-2026-91149CWE-770denial-of-service

CVE-2026-91149

High · published September 18, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
27.1
In the wild
Unconfirmed
What it is

A flaw was found in Cockpit. An unauthenticated remote attacker can exploit this vulnerability by initiating and sustaining numerous simultaneous connections to the `cockpit-tls` service. This forces the service to create an unbounded number of detached threads, consuming system resources such as memory and file descriptors. The primary consequence is a denial of service (DoS), leading to degradation or complete unavailability of the Cockpit service for legitimate users.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00347 · 27.1th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-09-18T21:17Z
References (2)
EPSS history
Timeline
  • 20 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 18 SEP 16:43Z
    Cockpit: cockpit: denial of service via unbounded connection thread spawning
    cvelistv5