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

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-88831

Published

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.

Source published
23 Sep 2026 17:45:23 UTC
Source modified
25 Sep 2026 22:28:19 UTC
Observed here
23 Oct 2026 15:48:27 UTC
Source terms
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CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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Sources read 12 Nov 10:06 UTC · 270 of 275 readable · 268 fully read · documentation 469/469 current