Is CVE-2026-88831 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-88831?

CVE-2026-88831 has a CVSS v3 severity of MEDIUM (5.3).

Back

Description

BusyBox httpd IP deny rules with invalid CIDR prefix lengths fail open, leaving a parsed IP with a zeroed mask so the rule matches no clients.