Vulnerability · Published Feb 12, 2026 · Assigned by GitHub_M

CVE-2026-26056Arbitrary WASM Code Execution via AnnotationOverrideFlight Injection in Yoke ATC

High 8.8

In plain English

A high-severity code injection in yoke from yokecd. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 60.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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. It allows users with CR create/update permissions to execute arbitrary WASM code in the ATC controller context by injecting a malicious URL through the overrides.yoke.cd/flight annotation. The ATC controller downloads and executes the WASM module without proper URL validation, enabling attackers to create arbitrary Kubernetes resources or potentially escalate privileges to cluster-admin level.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/yokecd/yoke	no fix listed	GHSA-wj8p-jj64-h7ff
Go	github.com/yokecd/yoke	no fix listed	GO-2026-4493

Affected products (as reported)

Vendor	Product	Versions
yokecd	yoke	< 0.19.0

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/yokecd/yoke/security/advisories/GHSA-wj8p-jj64-h7ff x_refsource_CONFIRM