Technology · npm
http-proxy-middleware (npm) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in http-proxy-middleware (npm): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-55603, was published on 22 June 2026.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About http-proxy-middleware (npm)
A Node.js proxy middleware for connect, express, and browser-sync.
Latest http-proxy-middleware (npm) vulnerabilities
- CVE-2026-55603: chimurai http-proxy-middleware CRLF injection in fixRequestBodyhighCVSS 7.5EPSS 0.3%
- CVE-2026-55602: chimurai http-proxy-middleware routing bypass via Host header substring matchmediumCVSS 4EPSS 0.4%
- CVE-2025-32996: http-proxy-middleware double write in fixRequestBodylowCVSS 3.1EPSS 0.5%
- CVE-2025-32997: http-proxy-middleware fixRequestBody error handling bypasslowCVSS 3.1EPSS 0.5%
- CVE-2024-21536: http-proxy-middleware denial of service in path filteringlowCVSS 3.1EPSS 1.0%
Most severe http-proxy-middleware (npm) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-55603: chimurai http-proxy-middleware CRLF injection in fixRequestBodyhighCVSS 7.5EPSS 0.3%
- CVE-2026-55602: chimurai http-proxy-middleware routing bypass via Host header substring matchmediumCVSS 4EPSS 0.4%
- CVE-2024-21536: http-proxy-middleware denial of service in path filteringlowCVSS 3.1EPSS 1.0%
- CVE-2025-32997: http-proxy-middleware fixRequestBody error handling bypasslowCVSS 3.1EPSS 0.5%
- CVE-2025-32996: http-proxy-middleware double write in fixRequestBodylowCVSS 3.1EPSS 0.5%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/http-proxy-middleware.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "http-proxy-middleware (npm) vulnerabilities", https://junglewise.ai/threats/technologies/http-proxy-middleware, 26 September 2026.