8.8

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

Analyzed
AliasesGHSA-wj8p-jj64-h7ffGO-2026-4493
Published 12-02-2026Last modified 12-02-2026

Vulnerability summary

CVE-2026-26056 is a high (CVSS 8.8) Improper Control of Generation of Code vulnerability in yokecd yoke. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 39.5% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · -0.14 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:0757-1

Timeline

  1. 12-02-2026
    PublishedVulnerability first disclosed.
  2. 12-02-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

40%

Versus all other CVEs

30-day change

Decrease -0.14 pp

From 0.59% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Yoke

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/yokecd1 product
  • yoke≤ 0.19.0 | All versions (No fix recorded)
Yokecd1 product
  • yoke< 0.19.0 | ≤ 0.19.0

2 vendors · 2 products

References

3 links