CVE catalog
CVE-2026-55602
http-proxy-middleware is node.js http-proxy middleware. From 0.16.0 until 2.0.10, 3.0.6, and 4.1.0, http-proxy-middleware documents router proxy-table entries as host, path, or host+path selectors, bu
- Severity
- Medium · CVSS 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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 - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.38% · Oct 25, 2026
http-proxy-middleware is node.js http-proxy middleware. From 0.16.0 until 2.0.10, 3.0.6, and 4.1.0, http-proxy-middleware documents router proxy-table entries as host, path, or host+path selectors, but the host+path implementation uses unanchored substring matching on attacker-controlled request metadata. As a result, a crafted Host header that is only a superstring match for a configured host+path key can still route a request to an unintended backend. This vulnerability is fixed in 2.0.10, 3.0.6, and 4.1.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | http-proxy-middleware | Not reported | 2.0.10 | fixed |
| Cpe | http-proxy-middleware | Not reported | 3.0.6 | fixed |
| Cpe | http-proxy-middleware | Not reported | 4.1.0 | fixed |
| Cpe | http-proxy-middleware | Not reported | 4.1.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | http-proxy-middleware | cpe | Not reported | 2.0.10 | Not reported | Not reported | Not reported |
| Cpe | http-proxy-middleware | cpe | Not reported | 3.0.6 | Not reported | Not reported | Not reported |
| Cpe | http-proxy-middleware | cpe | Not reported | 4.1.0 | Not reported | Not reported | Not reported |
| Cpe | http-proxy-middleware | cpe | Not reported | 4.1.0 | Not reported | NVD-CVE-2026-55602 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_21448-1.json]
- [https://github.com/chimurai/http-proxy-middleware/security/advisories/GHSA-64mm-vxmg-q3vj]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-55602]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-55602.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3623.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]