Bug 2531348 (CVE-2026-88834) - CVE-2026-88834 busybox: busybox: httpd user existence oracle in non-default shadow-disabled builds
Summary: CVE-2026-88834 busybox: busybox: httpd user existence oracle in non-default s...
Keywords:
Status: NEW
Alias: CVE-2026-88834
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-10 09:47 UTC by OSIDB Bzimport
Modified: 2026-10-13 13:51 UTC (History)
1 user (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-10 09:47:10 UTC 
A vulnerability was found in the BusyBox httpd Basic Authentication handler (networking/httpd.c) when configured to authenticate against system passwords. A missing else clause after a failed getspnam_r() call creates an observable behavioral difference between authentication failures for existing and non-existing system users. Existing user with wrong password: connection reset. Non-existing user: clean HTTP 401.
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