CVE-2026-88837: Red Hat Hardened Images

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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

Affected products

• Red Hat Red Hat Hardened Images: before 1.37.0-9.1.hum1 (fixed in 1.37.0-9.1.hum1)

Published 2026-09-23. Last modified 2026-09-25.