CVE-2026-76229Public exploit

Code execution via unquoted Helm chart name

Published Aug 19, 2026 · Updated Aug 20, 2026

Command injection in Mend.io Renovate before 40.33.0 allows remote authenticated users to execute code via crafted Kustomize Helm data. In lib/modules/manager/kustomize/artifacts.ts, helmRepositoryArgs appends depName to the shell command for helm pull --untar without shlex quoting in the vulnerable code path, so a chart name from kustomization.yaml and a Helm repository index can inject shell metacharacters. Exploitation requires write access to a repository that Renovate scans and reaches the vulnerable path when Kustomize Helm chart inflation is used; successful execution runs on the Renovate host with the bot's privileges.

CVSS severity8.4
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Mend.io Renovate before 40.33.0 allows remote authenticated users to execute code via crafted Kustomize Helm data. In lib/modules/manager/kustomize/artifacts.ts, helmRepositoryArgs appends depName to the shell command for helm pull --untar without shlex quoting in the vulnerable code path, so a chart name from kustomization.yaml and a Helm repository index can inject shell metacharacters. Exploitation requires write access to a repository that Renovate scans and reaches the vulnerable path when Kustomize Helm chart inflation is used; successful execution runs on the Renovate host with the bot's privileges.

The record

CVE
CVE-2026-76229
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
Mend.io
Product
Renovate
Classifications
CWE-77, T1059.004
Attack vector
Unavailable
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 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=39.218.0 <40.33.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesauthenticated

What is affected?

Mend.io · Renovateversion=39.218.0 <40.33.0

Published CVSS scores

6.7VulnCheckCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

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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