Description
The parser in accepts requests with a space (SP) right after the header name before the colon. This can lead to HTTP Request Smuggling (HRS) in llhttp < v2.1.4 and < v6.0.6.
Scores
CVSS v3
6.5
EPSS
0.0021
EPSS Percentile
43.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Details
CWE
CWE-444
Status
published
Products (4)
debian/debian_linux
11.0
llhttp/llhttp
< 2.1.4
oracle/graalvm
20.3.4
oracle/graalvm
21.3.0
Published
Nov 15, 2021
Tracked Since
Feb 18, 2026