Disclosure summary
Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Denial of Service with large HTTP headers: By using a combination of many requests with maximum sized headers (almost 80 KB per connection), and carefully timed completion of the headers, it is possible to cause the HTTP server to abort from heap allocation failure. Attack potential is mitigated by the use of a load balancer or other proxy layer.
Source-reported weakness categories
CWE-400
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2018-12121
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| nodejs | node.js | * {"versionStartIncluding":"10.0.0","versionEndExcluding":"10.14.0"} |
| nodejs | node.js | * {"versionStartIncluding":"11.0.0","versionEndExcluding":"11.3.0"} |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux_desktop | 7.0 |
| redhat | enterprise_linux_eus | 8.1 |
| redhat | enterprise_linux_eus | 8.2 |
| redhat | enterprise_linux_eus | 8.4 |
| redhat | enterprise_linux_eus | 8.6 |
| redhat | enterprise_linux_server | 7.0 |
| redhat | enterprise_linux_server_aus | 8.2 |
| redhat | enterprise_linux_server_aus | 8.4 |
| redhat | enterprise_linux_server_aus | 8.6 |
| redhat | enterprise_linux_server_tus | 8.2 |
| redhat | enterprise_linux_server_tus | 8.4 |
| redhat | enterprise_linux_server_tus | 8.6 |
| redhat | enterprise_linux_workstation | 7.0 |
Original records & references
- NIST NVD record
- CVE Program record
- access.redhat.com — Third Party Advisory
- access.redhat.com — Third Party Advisory
- access.redhat.com — Third Party Advisory
- nodejs.org — Patch, Vendor Advisory
- security.gentoo.org — Third Party Advisory
- access.redhat.com — Third Party Advisory
- access.redhat.com — Third Party Advisory
- access.redhat.com — Third Party Advisory
- nodejs.org — Patch, Vendor Advisory
- security.gentoo.org — Third Party Advisory
- security.netapp.com
PUBLISHED 2018-11-28T12:29:00-05:00
MODIFIED 2026-10-08T18:16:44-04:00
INGESTED 2026-10-10T20:50:18-04:00