CVE-2026-25740

medium

Description

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.

References

https://github.com/NixOS/nixpkgs/security/advisories/GHSA-wc3r-c66x-8xmc

https://github.com/NixOS/nixpkgs/pull/487779

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

Details

Source: Mitre, NVD

Published: 2026-02-09

Updated: 2026-02-09

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 5.8

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00005