CVE-2021-3116
Logic error in authentication in proxy.py
7.5
HIGH
CVSS 3.1
EPSS 0.41%
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).
How to fix CVE-2021-3116
To remediate CVE-2021-3116, upgrade the affected package to a fixed version below.
- PyPI/proxy-py—upgrade to 2.3.1 or later
- —upgrade to 2.3.1 or later
Is CVE-2021-3116 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.3.1
- from 0, < 2.3.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |