What is CVE-2026-26055?

CVE-2026-26055 is a high-severity vulnerability in Yokecd Yoke, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-02-12.

How severe is CVE-2026-26055?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Yokecd Yoke

CVE-2026-26055

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.

Vulnerability class: Broken Authentication

Published 2026-02-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Affected products

Yokecd Yoke — versions <= 0.19.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/yokecd/yoke/security/advisories/GHSA-965m-v4cc-6334 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-26055?: CVE-2026-26055 is a high-severity vulnerability in Yokecd Yoke, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-02-12.
How severe is CVE-2026-26055?: High severity. CVSS v3 base score is 7.5 out of 10.