{
  "schema_version": "1.4.0",
  "id": "GHSA-g3pv-pj5f-3hfq",
  "modified": "2024-09-24T20:40:46Z",
  "published": "2023-01-18T00:30:18Z",
  "aliases": [
    "CVE-2021-32837"
  ],
  "summary": "mechanize Regular Expression Denial of Service vulnerability",
  "details": "mechanize, a library for automatically interacting with HTTP web servers, contains a regular expression that is vulnerable to regular expression denial of service (ReDoS) prior to version 0.4.6. If a web server responds in a malicious way, then mechanize could crash. Version 0.4.6 has a patch for the issue.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    },
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "mechanize"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.6"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32837"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-mechanize/mechanize/commit/dd05334448e9f39814bab044d2eaa5ef69b410d6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/mechanize/PYSEC-2023-25.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python-mechanize/mechanize"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-mechanize/mechanize/blob/3acb1836f3fd8edc5a758a417dd46b53832ae3b5/mechanize/_urllib2_fork.py#L878-L879"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python-mechanize/mechanize/releases/tag/v0.4.6"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/06/msg00022.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2021-108-python-mechanize-mechanize"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2023-01-20T23:35:49Z",
    "nvd_published_at": "2023-01-17T22:15:00Z"
  }
}