CVE-2026-26056Public exploitNetwork attack vector

Authenticated WASM execution via unvalidated flight override

Published Feb 12, 2026 · Updated Feb 12, 2026

Code injection in YokeCD Yoke ATC before 0.19.0 allows remote authenticated users to execute WASM via a CR annotation. The admission webhook and reconciler assign the overrides.yoke.cd/flight annotation directly to Flight.Path, then download and execute that unvalidated URL. Create or update permission on an ATC-managed custom resource is sufficient to create arbitrary Kubernetes resources, with cluster-admin escalation when cluster access is enabled.

CVSS severity8.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in YokeCD Yoke ATC before 0.19.0 allows remote authenticated users to execute WASM via a CR annotation. The admission webhook and reconciler assign the overrides.yoke.cd/flight annotation directly to Flight.Path, then download and execute that unvalidated URL. Create or update permission on an ATC-managed custom resource is sufficient to create arbitrary Kubernetes resources, with cluster-admin escalation when cluster access is enabled.

The record

CVE
CVE-2026-26056
Published
Feb 12, 2026
Updated
Feb 12, 2026
Vendor
YokeCD
Product
Yoke
Classifications
CWE-94, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.19.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

YokeCD · Yokeversion=< 0.19.0

Published CVSS scores

8.8GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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