http-proxy-middleware vulnerabilities and fixes

Recent CVEs affecting http-proxy-middleware, with upgrade or downgrade steps. 2 tracked.

Also searched as: http proxy middleware.

http-proxy-middleware has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-06-22. Highest priority: CVE-2026-55602 (score 48/100).

• CVE-2026-55602 HIGH 8.6 UPGRADE http-proxy-middleware is node.js http-proxy middleware
• CVE-2026-55603 HIGH 7.5 UPGRADE http-proxy-middleware is node.js http-proxy middleware

FAQ

How do I fix http-proxy-middleware vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is http-proxy-middleware being exploited right now?

None of the tracked http-proxy-middleware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which http-proxy-middleware CVE should I patch first?

CVE-2026-55602 currently ranks highest (48/100): http-proxy-middleware is node.js http-proxy middleware.

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