CVE-2026-88834 (GCVE-0-2026-88834)

Vulnerability from cvelistv5 – Published: 2026-10-13 16:58 – Updated: 2026-10-13 17:16
VLAI
Title
Busybox: busybox: httpd user existence oracle in non-default shadow-disabled builds
Summary
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.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 17:16 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 987 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-88834 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2531348 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Date Public
2026-10-13 13:49
Credits
Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue.
Show details on NVD website
To clipboard 

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