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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-5170-1 nodejs security update
EUVD EUVD EUVD-2021-10084 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2025-04-30T22:24:37.284Z

Reserved: 2021-01-06T00:00:00

Link: CVE-2021-22959

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-11-15T15:15:06.747

Modified: 2024-11-21T05:51:01.317

Link: CVE-2021-22959

cve-icon Redhat

Severity : Low

Publid Date: 2021-10-12T00:00:00Z

Links: CVE-2021-22959 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses