What’s Vulnerable › Vulnerabilities

CVE-2026-76227: Renovate 42.68.1 before 42.96.3 and 43.0.0 before 43.4.4 Environment Variable Exposure

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-19 · updated 2026-10-08
• Weakness: CWE-526

Description

Renovate versions from 42.68.1 before 42.96.3 and from 43.0.0 before 43.4.4, including the renovate/renovate Docker images, and Mend Renovate CE/EE images (renovate-ce, renovate-ee-server, renovate-ee-worker) from 13.3.0 before 13.6.0, fail to restrict environment variables to an allowlist when spawning child processes. As a result, child processes (e.g. npm install, postUpgradeTasks, postUpdateOptions) gain full access to all environment variables of the Renovate process, allowing insider or outside attackers to exfiltrate secrets accessible to the Renovate deployment.

Affected products

• mend renovate-ce: from 13.3.0 before 13.6.0 — fixed in 13.6.0
• mend renovate-ee-server: from 13.3.0 before 13.6.0 — fixed in 13.6.0
• mend renovate-ee-worker: from 13.3.0 before 13.6.0 — fixed in 13.6.0
• renovatebot renovate: from 42.68.1 before 42.96.3; from 43.0.0 before 43.4.4 — fixed in 42.96.3, 43.4.4

How to fix

Upgrade to a fixed version: mend renovate-ce 13.6.0; mend renovate-ee-server 13.6.0; mend renovate-ee-worker 13.6.0; renovatebot renovate 42.96.3, 43.4.4. Check the vendor advisory for mitigations.

References

• https://github.com/renovatebot/renovate/security/advisories/GHSA-8wc6-vgrq-x6cf
• https://www.vulncheck.com/advisories/renovate-before-environment-variable-exposure

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