Vulnerability

CVE-2026-88831

Descriptive record received from OpenCTI and minimised for consultation in the Intel portal.

Sharing: PUBLIC-OSINT
Confidence: 100
Source: The CVE Program
Updated: 26/09/2026 02:21

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.

STIX identifiervulnerability--fe81ea3d-9c50-57ab-97f1-e19467c47842

First observation-

Last observation-

Known relationships8

Aliases and classifications

CWE-636Not Failing Securely ('Failing Open')

Minimised technical details

No raw data

cisa kev: False
cvss score: 5.3
cvss vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
cvss severity: MEDIUM

Provenance

Public references

RHBZ#2531346
https://bugzilla.redhat.com/show_bug.cgi
RHSA-2026:72111
https://access.redhat.com/errata/RHSA-2026:72111
vdb-entry
https://access.redhat.com/security/cve/CVE-2026-88831

EudorIA correlation

Intel catalogue

The vulnerability is also available in the EudorIA editorial catalogue.

Open EudorIA analysis

Presence in OpenCTI describes an intelligence correlation and does not, by itself, constitute evidence of compromise, legal attribution or operational guidance applicable without context verification.