{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:browserslist_project:browserslist:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.16.5"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "2a66017404213d054c39bfdf75e8d34ebe278cac"
            },
            {
              "fixed": "7cc2aedd0047d800d44aa0259c02b6db1414105c"
            },
            {
              "fixed": "c091916910dfe0b5fd61caad96083c6709b02d98"
            }
          ],
          "repo": "https://github.com/browserslist/browserslist",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "The package browserslist from 4.0.0 and before 4.16.5 are vulnerable to Regular Expression Denial of Service (ReDoS) during parsing of queries.",
  "id": "CVE-2021-23364",
  "modified": "2026-07-08T05:36:15.749631674Z",
  "published": "2021-04-28T16:15:08.133Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/browserslist/browserslist/blob/e82f32d1d4100d6bc79ea0b6b6a2d281a561e33c/index.js%23L472-L474"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/browserslist/browserslist/pull/593"
    },
    {
      "type": "FIX",
      "url": "https://github.com/browserslist/browserslist/commit/c091916910dfe0b5fd61caad96083c6709b02d98"
    },
    {
      "type": "FIX",
      "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1277182"
    },
    {
      "type": "FIX",
      "url": "https://snyk.io/vuln/SNYK-JS-BROWSERSLIST-1090194"
    }
  ],
  "related": [
    "SNYK-JAVA-ORGWEBJARSNPM-1277182",
    "SNYK-JS-BROWSERSLIST-1090194"
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}