What’s Vulnerable › Vulnerabilities

CVE-2026-66139

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-24 · updated 2026-10-24
• Weakness: CWE-306

Description

OpenStack Zaqar through 22.0.0 allows authentication bypass via an EXTRA-SPEC header when a UUID is known.

Affected products

• OpenStack Zaqar: from 12.0.0 before 20.1.1; 21.0.0, 22.0.0 — fixed in 20.1.1

How to fix

Upgrade to a fixed version: OpenStack Zaqar 20.1.1. Check the vendor advisory for mitigations.

References

• https://bugs.launchpad.net/ossa/+bug/2161254
• https://www.openwall.com/lists/oss-security/2026/07/23/7
• http://www.openwall.com/lists/oss-security/2026/07/24/27

Get alerted when CVE-2026-66139 or the next vulnerability affects your stack