CVE-2021-3116

PoC —

CVSS 3.1

7.5 high

EPSS

2%p76

Published

Jan 11, 2021 (Jan 11, 2021)

Modified

Jun 17, 2026

Description

before_upstream_connection in AuthPlugin in http/proxy/auth.py in proxy.py before 2.3.1 accepts incorrect Proxy-Authorization header data because of a boolean confusion (and versus or).

Vendors: proxy.py project
Products: proxy.py
Weakness: CWE-697
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (1.7%)

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