Vulnerability · Published Jul 24, 2026 · Assigned by mitre
CVE-2026-66139
Medium 4.8
In plain English
A medium-severity missing authentication in Zaqar from OpenStack. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.8Medium
Exploit odds (30 days)0.5%top 58.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenStack Zaqar through 22.0.0 allows authentication bypass via an EXTRA-SPEC header when a UUID is known.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | zaqar | no fix listed | DEBIAN-CVE-2026-66139 |
| Debian:13 | zaqar | no fix listed | DEBIAN-CVE-2026-66139 |
| Debian:14 | zaqar | 22.0.0-3 | DEBIAN-CVE-2026-66139 |
| Ubuntu:22.04:LTS | zaqar | no fix listed | UBUNTU-CVE-2026-66139 |
| Ubuntu:24.04:LTS | zaqar | no fix listed | UBUNTU-CVE-2026-66139 |
| Ubuntu:26.04:LTS | zaqar | no fix listed | UBUNTU-CVE-2026-66139 |
| Ubuntu:26.10 | zaqar | no fix listed | UBUNTU-CVE-2026-66139 |
Affected products (as reported)
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L