CVE-2021-22959

MEDIUM · CVSS 6.5 EPSS 2.94%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-11-15 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE

CVE-2021-22959

Severity

MEDIUM

CVSS

6.5

EPSS

2.94%

Original NVD 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.