Security advisory

{
  "id": "a21e72315704deaaa2dd4d72745e8af38e25b581d40834cb8f0f50a1a6d7e0c6",
  "url": "https://osv.dev/vulnerability/CVE-2019-9710",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-9710",
    "summary": "An issue was discovered in webargs before 5.1.3, as used with marshmallow and other products. JSON parsing uses a short-lived cache to store the parsed JSON body. This cache is not thread-safe, meaning that incorrect JSON payloads could have been parsed for concurrent requests.",
    "evidence": "osv:CVE-2019-9710",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-9710",
      "aliases": [
        "CVE-2019-9710",
        "GHSA-8554-jxcw-454q",
        "PYSEC-2019-139"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/marshmallow-code/webargs",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1c43dcaf1670cd5c6898c6297b489c2cdf87beb8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:webargs_project:webargs:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.1.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.0.2",
            "2.1.0",
            "1.4.0",
            "5.1.2",
            "5.1.1.post0",
            "5.1.1",
            "5.1.0",
            "5.0.0",
            "4.3.0",
            "4.2.0",
            "4.1.3",
            "4.1.2",
            "4.1.1",
            "4.1.0",
            "4.0.0",
            "3.0.1",
            "3.0.0",
            "2.0.0",
            "1.10.0",
            "1.9.0",
            "1.8.1",
            "1.8.0",
            "1.7.0",
            "1.6.3",
            "1.6.2",
            "1.6.1",
            "1.6.0",
            "1.5.3",
            "1.5.2",
            "1.5.1",
            "1.5.0",
            "1.3.4",
            "1.3.3",
            "1.3.2",
            "1.3.1",
            "1.3.0",
            "1.2.0",
            "1.1.1",
            "1.1.0",
            "1.0.0",
            "0.18.0",
            "0.17.0",
            "0.16.0",
            "0.15.0",
            "0.14.0",
            "0.13.0",
            "0.12.0",
            "0.11.0",
            "0.10.0",
            "0.9.1",
            "0.9.0",
            "0.8.1",
            "0.8.0",
            "0.7.0",
            "0.6.2",
            "0.6.1",
            "0.5.1",
            "0.5.0",
            "0.4.0",
            "0.3.4",
            "0.3.3",
            "0.3.2",
            "0.3.1",
            "0.3.0",
            "0.2.0",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9710.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:47.052469051Z",
      "provider": "osv",
      "references": [
        "https://webargs.readthedocs.io/en/latest/changelog.html",
        "https://github.com/marshmallow-code/webargs/issues/371"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-9710",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383818,
  "published_at": "2019-03-12T02:29:00.273+00:00"
}