CVE-2026-26055CWE-306

Unauthenticated Admission Webhook Endpoints in Yoke ATC

High · published February 12, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
51.4
In the wild
Unconfirmed
What it is

Yoke is a Helm-inspired infrastructure-as-code (IaC) package deployer. In 0.19.0 and earlier, a vulnerability exists in the Air Traffic Controller (ATC) component of Yoke. The ATC webhook endpoints lack proper authentication mechanisms, allowing any pod within the cluster network to directly send AdmissionReview requests to the webhook, bypassing Kubernetes API Server authentication. This enables attackers to trigger WASM module execution in the ATC controller context without proper authorization.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00669 · 51.4th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-02-12T21:07Z
EPSS history
Timeline
  • 12 FEB 21:07Z
    Unauthenticated Admission Webhook Endpoints in Yoke ATC
    cvelistv5