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CVE-2025-67750: Lightning Flow Scanner Vulnerable to Code Injection via Unsafe Use of `new Function()` in APIVersion Rule

December 12, 2025

The APIVersion rule uses new Function() to evaluate expression strings. A malicious crafted flow metadata file can cause arbitrary JavaScript execution during scanning. An attacker could execute arbitrary JavaScript during a scan by supplying a malicious expression within rule configuration or crafted flow metadata. This could compromise developer machines, CI runners, or editor environments.

References

  • github.com/Flow-Scanner/lightning-flow-scanner
  • github.com/Flow-Scanner/lightning-flow-scanner/commit/10f64a5eb193d8a777e453b25e910144e4540795
  • github.com/Flow-Scanner/lightning-flow-scanner/security/advisories/GHSA-55jh-84jv-8mx8
  • github.com/advisories/GHSA-55jh-84jv-8mx8
  • nvd.nist.gov/vuln/detail/CVE-2025-67750

Code Behaviors & Features

Detect and mitigate CVE-2025-67750 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 6.10.6

Fixed versions

  • 6.10.6

Solution

Upgrade to version 6.10.6 or above.

Impact 8.4 HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-94: Improper Control of Generation of Code ('Code Injection')

Source file

npm/lightning-flow-scanner/CVE-2025-67750.yml

Spotted a mistake? Edit the file on GitLab.

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