CVE-2026-88834
Busybox: busybox: httpd user existence oracle in non-default shadow-disabled builds
- State
- Published
- Severity
- 3.7 Low
- Published
- Oct 13, 2026
- Updated
- Oct 13, 2026
- Reserved
- Sep 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | redhat |
Weaknesses
- CWE-203 Observable Discrepancy
Affected Products
| Product | Versions |
|---|---|
Red Hat Hardened ImagesRed Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-88834vdb-entry
- RHBZ#2531348issue-tracking
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