CVE-2026-76229: Improper Neutralization of Special Elements used in a Command ('Command Injection') in renovatebot renovate
Description
Renovate versions from 39.218.0 up to but not including 40.33.0 contain a command injection vulnerability in the kustomize manager. This flaw allows attackers with repository write access to execute arbitrary commands on the Renovate host by using malicious kustomization.yaml files with specially crafted chart names. The vulnerability arises because these chart names are appended unsafely to helm pull commands. It has a high severity score of 8.4.
CVSS v4.0
Score 8.4high
Affected software
renovatebot
renovate
pkg:github/renovatebot/renovateRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76229 is a command injection vulnerability affecting Renovate versions >=39.218.0 and <40.33.0. The vulnerability exists in the kustomize manager component, where attacker-controlled chart names in kustomization.yaml files are appended unsafely to helm pull commands. This improper neutralization of special elements allows an attacker with repository write access to execute arbitrary commands on the Renovate host system.
Potential Impact
An attacker with write access to the repository can exploit this vulnerability to execute arbitrary commands on the Renovate host, potentially leading to full system compromise or unauthorized actions performed by the Renovate process. This elevates the risk of unauthorized code execution and system control.
Mitigation Recommendations
A fix is available in Renovate version 40.33.0 and later. Users should upgrade to version 40.33.0 or newer to remediate this vulnerability. Until then, restrict repository write access to trusted users only to reduce exploitation risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-19T11:36:02.573Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a85bc7eacd9273b492f4a00
Added to database: 08/19/2026, 14:23:58 UTC
Last enriched: 10/03/2026, 17:33:05 UTC
Last updated: 10/04/2026, 10:02:29 UTC
Views: 35
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