Logic error in authentication in proxy.py

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.017, the 77th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the GitHub Advisory Database, published 7 Apr 2021. New records show when each source confirmed them.

Sources

• GitHub Advisory Database: GHSA-cmc7-mfmr-xqrx
• OSV: GHSA-cmc7-mfmr-xqrx
• nvd.nist.gov/vuln/detail/CVE-2021-3116
• github.com/abhinavsingh/proxy.py/pull/482
• github.com/abhinavsingh/proxy.py/pull/482/commits/9b00093288237f5073c403f2c4f62acfdfa8ed46
• github.com/abhinavsingh/proxy.py/commit/bff171ec26d826ae1d22d2466eaf9d8bdbf059d3
• cardaci.xyz/advisories/2021/01/10/proxy.py-2.3.0-broken-basic-authentication
• github.com/abhinavsingh/proxy.py
• github.com/advisories/GHSA-cmc7-mfmr-xqrx
• github.com/pypa/advisory-database/tree/main/vulns/proxy-py/PYSEC-2021-46.yaml
• pypi.org/project/proxy.py/2.3.1/#history

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.