Security advisory

{
  "id": "27aa620eaa88e5acc49afa87a8db1d4bdfb7f1eadfb42186e160e413af367346",
  "url": "https://osv.dev/vulnerability/CVE-2021-23341",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-23341",
    "summary": "The package prismjs before 1.23.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the prism-asciidoc, prism-rest, prism-tap and prism-eiffel components.",
    "evidence": "osv:CVE-2021-23341",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-23341",
      "aliases": [
        "CVE-2021-23341",
        "GHSA-h4hr-7fg3-h35w"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/prismjs/prism",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "88a17b4ff586c8bbd0faf1b1524cee9e039fa580"
                },
                {
                  "fixed": "c2f6a64426f44497a675cb32dccb079b3eff1609"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:prismjs:prism:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.23.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c2f6a64426f44497a675cb32dccb079b3eff1609"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.22.0",
            "v1.21.0",
            "v1.20.0",
            "v1.19.0",
            "v1.18.0",
            "v1.17.1",
            "v1.17.0",
            "v1.16.0",
            "v1.15.0",
            "v1.14.0",
            "v1.13.0",
            "v1.12.2",
            "v1.12.1",
            "v1.12.0",
            "v1.11.0",
            "v1.10.0",
            "v1.9.0",
            "v1.8.4",
            "v1.8.3",
            "v1.8.2",
            "v1.8.1",
            "v1.8.0",
            "v1.7.0",
            "v1.6.0",
            "1.5.1",
            "1.5.0",
            "v1.4.1",
            "1.4.0",
            "v1.3.0",
            "v1.2.0",
            "v1.1.0",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23341.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:31.803213971Z",
      "provider": "osv",
      "references": [
        "https://github.com/PrismJS/prism/commit/c2f6a64426f44497a675cb32dccb079b3eff1609",
        "https://github.com/PrismJS/prism/issues/2583",
        "https://github.com/PrismJS/prism/pull/2584",
        "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1076583",
        "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076582",
        "https://snyk.io/vuln/SNYK-JS-PRISMJS-1076581"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-23341",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385488,
  "published_at": "2021-02-18T16:15:14.143+00:00"
}