CVE-2026-88834 — Busybox: busybox: httpd user existence oracle in non-default shadow-disabled builds
A flaw was found in BusyBox's httpd web server. When configured with system password authentication, a user existence oracle may exist in certain build configurations. An attack…
Published: 2026-10-13 · CVSS: 3.7 · CVSS 3.1
A flaw was found in BusyBox's httpd web server. When configured with system password authentication, a user existence oracle may exist in certain build configurations. An attacker could distinguish existing from non-existing usernames by observing authentication failure behavior. Impact is limited to username enumeration and requires non-default compile options or uncommon password file states; default BusyBox builds with shadow password support are not affected.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7