CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCVE-2021-3116
High (7.5) in proxy.py project proxy.py. EPSS 1.7% chance of exploitation in the next 30 days. Fixed in proxy-py 2.3.1.
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).
Severity
- EPSS
- 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
- CWE
- CWE-697
- Published
- Modified
- Record from
- the NVD, synced
Affected
- proxy.py_project:proxy.py
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cmc7-mfmr-xqrx | PyPI | proxy-py | <2.3.1 | 2.3.1 |
| PYSEC-2021-46 | PyPI | proxy-py | <2.3.1 | 2.3.1 |
References
- https://cardaci.xyz/advisories/2021/01/10/proxy.py-2.3.0-broken-basic-authentication/
- https://github.com/abhinavsingh/proxy.py/pull/482/commits/9b00093288237f5073c403f2c4f62acfdfa8ed46
- https://pypi.org/project/proxy.py/2.3.1/#history
- https://cardaci.xyz/advisories/2021/01/10/proxy.py-2.3.0-broken-basic-authentication/
- https://github.com/abhinavsingh/proxy.py/pull/482/commits/9b00093288237f5073c403f2c4f62acfdfa8ed46