GHSA-P28H-CC7Q-C4FG

Vulnerability from github – Published: 2022-10-01 00:00 – Updated: 2025-05-20 21:02
VLAI?
Summary
css-what vulnerable to ReDoS due to use of insecure regular expression
Details

The package css-what before 2.1.3 is vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of insecure regular expression in the re_attr variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.

Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "css-what"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21222"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-10-04T21:11:32Z",
    "nvd_published_at": "2022-09-30T05:15:00Z",
    "severity": "HIGH"
  },
  "details": "The package css-what before 2.1.3 is vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of insecure regular expression in the `re_attr` variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.",
  "id": "GHSA-p28h-cc7q-c4fg",
  "modified": "2025-05-20T21:02:33Z",
  "published": "2022-10-01T00:00:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21222"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fb55/css-what/commit/dc510929790da6617e7aa93a616498b22f6a6b72"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/fb55/css-what"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js#23L12"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js%23L12"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-JS-CSSWHAT-3035488"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "css-what vulnerable to ReDoS due to use of insecure regular expression"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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