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Renovate CVE-2026-88889

| EUVDEUVD-2026-75439 HIGH
OS Command Injection (CWE-78)
2026-09-10 VulnCheck GHSA-q946-5qg8-8wmj
8.5
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
8.5 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.0 HIGH

AV:L and PR:L for repo write access; AC:H because binarySource=docker is a non-default deployment prerequisite; S:U since impact stays within the Renovate process.

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

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
POC Analysis Generated
Sep 10, 2026 - 15:22 vuln.today
Patch available
Sep 10, 2026 - 14:02 EUVD
Analysis Generated
Sep 10, 2026 - 13:54 vuln.today
CVE Published
Sep 10, 2026 - 13:05 cve.org
HIGH 8.5

DescriptionCVE.org

Renovate before 44.14.7 contains a command injection vulnerability in the Maven Wrapper manager that allows attackers to execute arbitrary commands by specifying a malicious distributionType parameter in maven-wrapper.properties. Attackers can inject shell commands through unescaped distributionType values to achieve remote code execution when Renovate processes Maven Wrapper updates in binarySource=docker mode.

AnalysisAI

Command injection in Renovate's Maven Wrapper manager allows an attacker with write access to a scanned repository to execute arbitrary OS commands on the host running Renovate when binarySource=docker mode is active. Unescaped distributionType values from maven-wrapper.properties are passed directly to a shell, giving the attacker full code execution in the Renovate process context. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires two concurrent conditions: (1) the attacker must have write access (direct commit or accepted pull request) to at least one repository that the target Renovate instance is configured to scan, enabling placement of a malicious `maven-wrapper.properties` file; and (2) the Renovate instance must be running with `binarySource=docker` mode enabled - this is not the default in all deployments and must be explicitly configured. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The provided CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:L/UI:N, score 8.5) reflects that the attacker requires low-privilege write access to a repository Renovate processes, and exploitation itself is straightforward once that condition is met. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Renovate to version 44.14.7 or later, which sanitizes the `distributionType` value before shell interpolation. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, identify all Renovate instances using Maven Wrapper manager and assess which scanned repositories allow external contributor access. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-88889 vulnerability details – vuln.today

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