CVE-2026-66139

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 60/100
Published: 2026-07-24 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: Low

Description

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

Weakness Classification (1)

Bug Bounty Relevance

60 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

4.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

EPSS — Exploitation Probability

0.48%
Raw Score 0.004760
Percentile 41.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00476
2026-10-28
0.00476

Intelligence Sources

nvd ref →