What is CVE-2026-55602?

CVE-2026-55602 is a high-severity vulnerability in Chimurai Http-proxy-middleware, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2026-06-22.

How severe is CVE-2026-55602?

High severity. CVSS v3 base score is 8.6 out of 10.

Improper input validation in Chimurai Http-proxy-middleware

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, but the host+path implementation uses una…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.004 (29.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.

Affected products

Chimurai Http-proxy-middleware — versions >= 4.0.0, < 4.1.0, >= 3.0.0, < 3.0.6, >= 0.16.0, < 2.0.10

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-55602?: CVE-2026-55602 is a high-severity vulnerability in Chimurai Http-proxy-middleware, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2026-06-22.
How severe is CVE-2026-55602?: High severity. CVSS v3 base score is 8.6 out of 10.