What is CVE-2026-22797?

CVE-2026-22797 is a critical-severity vulnerability in Openstack Keystonemiddleware, classified under Authentication Bypass by Spoofing. CVSS score: 9.9/10. Published 2026-01-19.

How severe is CVE-2026-22797?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Openstack Keystonemiddleware

CVE-2026-22797

An issue was discovered in OpenStack keystonemiddleware 10.5 through 10.7 before 10.7.2, 10.8 and 10.9 before 10.9.1, and 10.10 through 10.12 before 10.12.1. The external_oauth2_token middleware fails to sanitize incoming authentication he…

EPSS: 0.002 (37.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L.

Affected products

Openstack Keystonemiddleware — versions 10.5.0, 10.8.0, 10.10.0

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

launchpad.net/bugs/2129018
www.openwall.com/lists/oss-security/2026/01/16/9

Frequently asked questions

What is CVE-2026-22797?: CVE-2026-22797 is a critical-severity vulnerability in Openstack Keystonemiddleware, classified under Authentication Bypass by Spoofing. CVSS score: 9.9/10. Published 2026-01-19.
How severe is CVE-2026-22797?: Critical severity. CVSS v3 base score is 9.9 out of 10.