CVE-2021-22959
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Llhttp
PublishedNov 15, 2021
First seenNov 15, 2021
Weakness typeCWE-444CWE-444
How to fix
Update
- llhttp llhttp2.1.4, 6.0.6 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| llhttp llhttp | v < 2.1.4, 3.0.0 ≤ v < 6.0.6 | 2.1.4, 6.0.6 |
| oracle graalvm | 20.3.4, 21.3.0 | — |
| debian debian_linux | 11.0 | — |
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