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.
CVE-2024-21536
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 41% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 59.4%
- KEV
- Not listed
Published
October 19, 2024
Last Modified
November 1, 2024
References (4)
- report@snykhttps://gist.github.com/mhassan1/28be67266d82a53708ed59ce5dc3c94a
- report@snykhttps://github.com/chimurai/http-proxy-middleware/commit/0b4274e8cc9e9a2c5a06f35fbf456ccfcebc55a5
- report@snykhttps://github.com/chimurai/http-proxy-middleware/commit/788b21e4aff38332d6319557d4a5b1b13b1f9a22
- report@snykhttps://security.snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906
Vendor Advisories for CVE-2024-21536(19)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2025:10853Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.19.0
- RHSA-2025:9294Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.17.2
- RHSA-2025:8551Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.14.18 Bug Fix Update
- RHSA-2025:8544Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.15.14 Bug Fix Update
- RHSA-2025:8510Red Hat Product SecurityHigh
Red Hat Security Advisory: Migration Toolkit for Containers (MTC) 1.8.7 security and bug fix update
- RHSA-2025:8512Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.16.4
- RHSA-2025:8479Red Hat Product SecurityHigh
Red Hat Security Advisory: RHODF-4.16-RHEL-9 security update
- RHSA-2025:8233Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.18.1
- +11 more
Patch Availability(20)
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| http-proxy-middleware | — | 3.0.3 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 10× in last 7d / 49× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 16:56 UTCEPSS rescore
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- 2026-07-13 22:38 UTCOSV refresh
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- 2026-06-25 20:16 UTCOSV refresh
- 2026-06-25 13:48 UTCEPSS rescore
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- 2026-06-08 14:16 UTCEPSS rescore
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- 2026-06-08 09:58 UTCOSV refresh
- 2026-06-07 15:24 UTCEPSS rescore
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- 2026-05-23 20:17 UTCEG score recompute
- 2026-05-23 20:17 UTCVendor advisory
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
Same CWE
10 shownCWE-400
Frequently asked(5)
What is CVE-2024-21536?
When was CVE-2024-21536 disclosed?
Is CVE-2024-21536 actively exploited?
What is the CVSS score of CVE-2024-21536?
How do I remediate CVE-2024-21536?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-21536
Is Your Infrastructure Affected by CVE-2024-21536?
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