CVE-2026-62985: request-filtering-agent: Synchronous throw from createConnection() for literal private-IP hosts bypasses req.on('error'), crashing the Node.js process
RequestFilteringHttpAgent / RequestFilteringHttpsAgent block requests to private IPs, but the blocking happens via a synchronous throw inside createConnection() for literal private-IP hostnames (e.g. 169.254.169.254, 127.0.0.1). Node.js’s http.request / http.get expects createConnection to emit an error asynchronously; a synchronous throw instead escapes the caller’s req.on('error', ...) handler entirely and becomes an unhandled exception that crashes the process.
References
- github.com/advisories/GHSA-r3r9-wp5j-pq5g
- github.com/azu/request-filtering-agent/commit/9d12561064524807fc399158eaa5bd7a40dd8cd0
- github.com/azu/request-filtering-agent/releases/tag/v3.2.1
- github.com/azu/request-filtering-agent/security/advisories/GHSA-r3r9-wp5j-pq5g
- nvd.nist.gov/vuln/detail/CVE-2026-62985
Code Behaviors & Features
Detect and mitigate CVE-2026-62985 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →