Regular expression denial of service in dparse

{
  "id": "0ace2540a57d35e9bd914f154b94d0c770633d7c6ab4743f07ec7cc24b7919bc",
  "url": "https://osv.dev/vulnerability/CVE-2022-39280",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Regular expression denial of service in dparse",
    "summary": "dparse is a parser for Python dependency files. dparse in versions before 0.5.2 contain a regular expression that is vulnerable to a Regular Expression Denial of Service. All the users parsing index server URLs with dparse are impacted by this vulnerability. A patch has been applied in version `0.5.2`, all the users are advised to upgrade to `0.5.2` as soon as possible. Users unable to upgrade should avoid passing index server URLs in the source file to be parsed.",
    "evidence": "osv:CVE-2022-39280",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-39280",
      "aliases": [
        "CVE-2022-39280",
        "GHSA-8fg9-p83m-x5pq",
        "PYSEC-2022-301"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pyupio/dparse",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a3d9beb0f97331bdc0cb83ec628131e89b8c68d2"
                },
                {
                  "fixed": "8c990170bbd6c0cf212f1151e9025486556062d5"
                },
                {
                  "fixed": "d87364f9db9ab916451b1b036cfeb039e726e614"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:pyup:dependency_parser:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.5.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8c990170bbd6c0cf212f1151e9025486556062d5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d87364f9db9ab916451b1b036cfeb039e726e614"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.5.0",
            "0.4.1",
            "0.4",
            "0.3.0",
            "0.2.1",
            "0.2.0",
            "0.1.1",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-39280.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.284782514Z",
      "provider": "osv",
      "references": [
        "https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39280.json",
        "https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pq",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-39280",
        "https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5",
        "https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-400"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39280.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-39280",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505578,
  "published_at": "2022-10-06T00:00:00+00:00"
}