Nixpkgs security tracker

Permalink CVE-2026-76235

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 5 days, 2 hours ago Activity log

Created suggestion 5 days, 2 hours ago

Cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via cockpitlang cookie in send_login_html

A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.

References

https://access.redhat.com/security/cve/CVE-2026-76235 vdb-entryx_refsource_REDHAT
RHBZ#2519497 issue-trackingx_refsource_REDHAT

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 363.1
- nixpkgs-unstable 363.1
- nixos-unstable-small 365
nixos-26.05 362
- nixos-26.05-small 362
- nixpkgs-26.05-darwin 362

pkgs.cockpit-zfs

Cockpit plugin for ZFS management by 45Drives

nixos-unstable 1.2.27-3
- nixpkgs-unstable 1.2.27-3
- nixos-unstable-small 1.3.0
nixos-26.05 1.2.27-3
- nixos-26.05-small 1.2.27-3
- nixpkgs-26.05-darwin 1.2.27-3