VYPR
Medium severity6.5NVD Advisory· Published Nov 15, 2021· Updated Jun 17, 2026

CVE-2021-22959

CVE-2021-22959

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.

Affected products

53

Patches

Vulnerability mechanics

References

3

News mentions

0

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