{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.3.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "82d562b7d6b068ea706634f97e6a086f5209df61"
            }
          ],
          "repo": "https://github.com/abhinavsingh/proxy.py",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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).",
  "id": "CVE-2021-3116",
  "modified": "2026-03-13T21:50:41.643662443Z",
  "published": "2021-01-11T05:15:10.987Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/abhinavsingh/proxy.py/pull/482/commits/9b00093288237f5073c403f2c4f62acfdfa8ed46"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/proxy.py/2.3.1/#history"
    },
    {
      "type": "EVIDENCE",
      "url": "https://cardaci.xyz/advisories/2021/01/10/proxy.py-2.3.0-broken-basic-authentication/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}