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Untriaged
Permalink CVE-2026-91149
7.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
created 2 days, 14 hours ago Activity log
  • Created suggestion
Cockpit: cockpit: denial of service via unbounded connection thread spawning

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.

References

Affected products

cockpit
devspaces/udi-rhel9
devspaces/udi-base-rhel9
devspaces/udi-base-rhel10

Matching in nixpkgs

pkgs.cockpit

Web-based graphical interface for servers

  • nixos-unstable -
    • nixos-unstable-small 366
  • nixos-26.05 -
    • nixos-26.05-small 362

pkgs.cockpit-zfs

Cockpit plugin for ZFS management by 45Drives

  • nixos-unstable -
    • nixos-unstable-small 1.3.0
  • nixos-26.05 -

pkgs.cockpit-files

Featureful file browser for Cockpit

  • nixos-unstable -
    • nixos-unstable-small 43
  • nixos-26.05 -
    • nixos-26.05-small 40

pkgs.cockpit-podman

Cockpit UI for podman containers

  • nixos-unstable -
    • nixos-unstable-small 129
  • nixos-26.05 -
    • nixos-26.05-small 125

pkgs.cockpit-machines

Cockpit UI for virtual machines

  • nixos-unstable -
    • nixos-unstable-small 355
  • nixos-26.05 -
    • nixos-26.05-small 352

Package maintainers