OpenStack Zaqar <22.0.0 Authentication Bypass via EXTRA-SPEC Header
CVE-2026-66139 Published on July 24, 2026
OpenStack Zaqar through 22.0.0 allows authentication bypass via an EXTRA-SPEC header when a UUID is known.
Vulnerability Analysis
CVE-2026-66139 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity, and a small impact on availability.
Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
LOW
Weakness Type
Missing Authentication for Critical Function
The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Affected Versions
OpenStack Zaqar:- Version 12.0.0 and below 20.1.1 is affected.
- Version 21.0.0 is affected.
- Version 22.0.0 is affected.