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CVE-2026-88831

nvd nist
Published: Sep 23, 2026Modified: Sep 25, 2026

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5.3
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploitability: 3.9 / Impact: 1.4
Source: secalert@redhat.com (Secondary)

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.

Related CWEs

CWE-636
Not Failing Securely ('Failing Open')
When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions.

References (3)

Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com

Timeline

No history available yet.