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.
SeverityMedium
CVSS5.8
Exploit probability6. percentile0.2%
ProductNixos Nixpkgs
PublishedFeb 9, 2026
First seenFeb 9, 2026
Weakness typeCWE-250CWE-250
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| NixOS nixpkgs | <= 25.05 | — |
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