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CVE-2026-88831 Busybox: busybox: httpd silently fails open when ip deny rules contain invalid cidr prefix lengths

🗓️ 23 Sep 2026 17:45:23Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 49 Views

BusyBox httpd fail open when IP deny rules contain invalid CIDR prefix lengths.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-88831
25 Sep 202604:06
–circl
cve
CVE
CVE-2026-88831
23 Sep 202617:45
–cve
debiancve
Debian CVE
CVE-2026-88831
23 Sep 202617:45
–debiancve
euvd
EUVD
EUVD-2026-85509
23 Sep 202617:45
–euvd
mend
Mend
CVE-2026-88831
23 Sep 202617:45
–mend
mscve
Microsoft CVE
Busybox: busybox: httpd silently fails open when ip deny rules contain invalid cidr prefix lengths
1 Oct 202608:06
–mscve
nvd
NVD
CVE-2026-88831
23 Sep 202618:17
–nvd
opensuse
OPENSUSE Linux
busybox-1.38.0-3.1 on GA media (moderate)
7 Oct 202600:00
–opensuse
osv
OSV
AZL-105131 CVE-2026-88831 affecting package busybox 1.36.1-27
23 Sep 202618:17
–osv
osv
OSV
DEBIAN-CVE-2026-88831
23 Sep 202618:17
–osv
Rows per page
[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "busybox-main",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "1.37.0-9.1.hum1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  }
]

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25 Sep 2026 22:28Current
CVSS 3.15.3
EPSS0.00236
SSVC
49