CVE-2026-25740

captive browser, a dedicated Chrome instance to log into captive portals without messing with DNS settings. In 25.05 and earlier, when programs.captive-browser is enabled, any user of the system can run arbitrary commands with the CAP_NET_RAW capability (binding to privileged ports, spoofing localhost traffic from privileged services…). This vulnerability is fixed in 25.11 and 26.05.

More information : https://github.com/NixOS/nixpkgs/pull/487775