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Vulnerability record · CVE-2024-21536 · published 19 October 2024

CVE-2024-21536: Chimurai http-proxy-middleware uncontrolled resource consumption vulnerability

CChimurai · Http Proxy Middleware

Versions of the package http-proxy-middleware before 2.0.7, from 3.0.0 and before 3.0.3 are vulnerable to Denial of Service (DoS) due to an UnhandledPromiseRejection error thrown by micromatch. An attacker could kill the Node.js process and crash the server by making requests to certain paths.

7.7 CVSS 4.0 High EPSS 1.0% · top 37.6% CWE-400 · Uncontrolled resource consumption
7.7CVSS 4.0 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
1 Aug 2026Last modified by NVD

Description

Versions of the package http-proxy-middleware before 2.0.7, from 3.0.0 and before 3.0.3 are vulnerable to Denial of Service (DoS) due to an UnhandledPromiseRejection error thrown by micromatch. An attacker could kill the Node.js process and crash the server by making requests to certain paths.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/mhassan1/28be67266d82a53708ed59ce5dc3c94a ExploitThird Party Advisory
https://github.com/chimurai/http-proxy-middleware/commit/0b4274e8cc9e9a2c5a06f35fbf456ccfcebc55a5 Patch
https://github.com/chimurai/http-proxy-middleware/commit/788b21e4aff38332d6319557d4a5b1b13b1f9a22 Patch
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-8309098
https://security.snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-21536), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.