Vulnerability 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.
CVSS Score
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:72111
- https://access.redhat.com/security/cve/CVE-2026-88831
- https://bugzilla.redhat.com/show_bug.cgi?id=2531346
FAQ
What is CVE-2026-88831?
CVE-2026-88831 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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.
How severe is CVE-2026-88831?
CVE-2026-88831 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-88831?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.