BusyBox httpd treats yescrypt ($y$) password hashes as plaintext during Basic Authentication, inverting the authentication check.

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Fixes

Solution

No solution given by the vendor.


Workaround

Do not use BusyBox httpd for password-protected resources. If it must be used, configure authentication with SHA-512 ($6$) hashes, which are correctly detected. Upstream should update the hash detection logic to recognize the $y$ prefix.

History

Wed, 23 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Description BusyBox httpd treats yescrypt ($y$) password hashes as plaintext during Basic Authentication, inverting the authentication check.
Title Busybox: busybox: httpd misidentifies yescrypt password hashes as plaintext, inverting authentication
First Time appeared Redhat
Redhat hummingbird
Weaknesses CWE-305
CPEs cpe:/a:redhat:hummingbird:1
Vendors & Products Redhat
Redhat hummingbird
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-23T18:00:58.072Z

Reserved: 2026-09-10T09:42:04.559Z

Link: CVE-2026-88837

cve-icon Vulnrichment

Updated: 2026-09-23T18:00:27.062Z

cve-icon NVD

Status : Received

Published: 2026-09-23T18:17:10.493

Modified: 2026-09-23T19:19:42.600

Link: CVE-2026-88837

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T20:00:09Z

Weaknesses