CVE-2026-661394.8MediumCWE-306

CVE-2026-66139: OpenStack Zaqar vulnerability

OpenStack · Zaqar

Vendor fix available · Affected: OpenStack Zaqar · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.5%probability of exploitation in the next 30 days

41st percentile

050100

Higher than 41% of scored CVEs

4.8MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

OpenStack · Zaqarfrom 12.0.0 before 20.1.1; 21.0.0; 22.0.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Missing Authentication · Authentication
Vendor: OpenStack
Published: July 2026
Band: Unlikely (under 1%), July 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-66139 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.