What is CVE-2026-57915?

CVE-2026-57915 is a high-severity vulnerability in Apache Software Foundation Kerby, classified under Missing Critical Step in Authentication. CVSS score: 7.3/10. Published 2026-06-26.

How severe is CVE-2026-57915?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Apache Software Foundation Kerby

CVE-2026-57915

It is possible to bypass the Kerberos pre-authentication check in Apache Kerby by sending a PA-DATA with an unrecognized or unsupported type. Users are recommended to upgrade to version 2.1.2, which fixes this issue.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Apache Software Foundation Kerby — versions 0

Weakness classification (CWE)

CWE-304 — Missing Critical Step in Authentication

References

security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-57915?: CVE-2026-57915 is a high-severity vulnerability in Apache Software Foundation Kerby, classified under Missing Critical Step in Authentication. CVSS score: 7.3/10. Published 2026-06-26.
How severe is CVE-2026-57915?: High severity. CVSS v3 base score is 7.3 out of 10.