What is CVE-2026-88837?

CVE-2026-88837 is a medium-severity vulnerability in Red Hat Hardened Images, classified under Authentication Bypass by Primary Weakness. CVSS score: 6.5/10. Published 2026-09-23.

How severe is CVE-2026-88837?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Red Hat Hardened Images

CVE-2026-88837

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

Published 2026-09-23 · last modified 2026-09-23.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Red Hat Hardened Images

Weakness classification (CWE)

CWE-305 — Authentication Bypass by Primary Weakness

References

access.redhat.com/security/cve/CVE-2026-88837 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)

Frequently asked questions

What is CVE-2026-88837?: CVE-2026-88837 is a medium-severity vulnerability in Red Hat Hardened Images, classified under Authentication Bypass by Primary Weakness. CVSS score: 6.5/10. Published 2026-09-23.
How severe is CVE-2026-88837?: Medium severity. CVSS v3 base score is 6.5 out of 10.