CVE-2026-88834
Low · 3.7CVSS
3.7
EPSS
0.2%
Published
Oct 13, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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