CVE-2024-21536
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
1.0%
62.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-400
Published 2024-10-19 · modified 2026-08-01
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2024-10-19 — Published (NVD)
- 2026-08-01 — Last modified (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.
Affected
References
- exploit https://gist.github.com/mhassan1/28be67266d82a53708ed59ce5dc3c94a
- https://github.com/chimurai/http-proxy-middleware/commit/0b4274e8cc9e9a2c5a06f35fbf456ccfcebc55a5
- https://github.com/chimurai/http-proxy-middleware/commit/788b21e4aff38332d6319557d4a5b1b13b1f9a22
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-8309098
- https://security.snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906