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VULNERABILITIES

CVE-2026-88831 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:72111 [email protected]
https://access.redhat.com/security/cve/CVE-2026-88831 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2531346 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-636Not Failing Securely ('Failing Open')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-88831
NVD Published Date:
Sep 23, 2026
NVD Last Modified:
Sep 25, 2026
Source:
[email protected]