Secret disclosure via inherited child-process environment
Published Aug 19, 2026 · Updated Aug 25, 2026
Environment variable exposure in Mend.io Renovate 42.68.1 through 43.4.3 allows attackers to read deployment secrets via child processes. Renovate's execa invocation extends the parent process environment after allowlist filtering was inadvertently removed, giving npm install, postUpgradeTasks, and postUpdateOptions every inherited variable. Exploitation requires influence over a spawned task or its executed repository content; the reported consequence is secret disclosure without integrity or availability impact.
Summary
What happened
Environment variable exposure in Mend.io Renovate 42.68.1 through 43.4.3 allows attackers to read deployment secrets via child processes. Renovate's execa invocation extends the parent process environment after allowlist filtering was inadvertently removed, giving npm install, postUpgradeTasks, and postUpdateOptions every inherited variable. Exploitation requires influence over a spawned task or its executed repository content; the reported consequence is secret disclosure without integrity or availability impact.
The record
- CVE
- CVE-2026-76227
- Published
- Aug 19, 2026
- Updated
- Aug 25, 2026
- Vendor
- Mend.io
- Product
- Renovate
- Classifications
- CWE-526, T1552
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 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.
- Affected versionversion=13.3.0 <13.6.0
- Affected versionversion=42.68.1 <42.96.3
- Affected versionversion=42.68.1 <43.4.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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