CVE-2019-9516
MEDIUM6.5EPSS 2.1%Published: 8/13/2019Modified: 4/28/2026
Description
Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory.
Affected packages (3)
- Alpine/nginxfrom 0, < 1.16.1-r0
- Alpine/nodejsfrom 0, < 10.16.3-r0
- Debian/nginxfrom 0, < 1.14.2-3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |