Security advisory

{
  "id": "df0c18fa3355ef0f67c11f54e8d7447b6688842b7c8daa7a4b5730b651a99e9f",
  "url": "https://osv.dev/vulnerability/CVE-2021-32723",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-32723",
    "summary": "Prism is a syntax highlighting library. Some languages before 1.24.0 are vulnerable to Regular Expression Denial of Service (ReDoS). When Prism is used to highlight untrusted (user-given) text, an attacker can craft a string that will take a very very long time to highlight. This problem has been fixed in Prism v1.24. As a workaround, do not use ASCIIDoc or ERB to highlight untrusted text. Other languages are not affected and can be used to highlight untrusted text.",
    "evidence": "osv:CVE-2021-32723",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-32723",
      "aliases": [
        "CVE-2021-32723",
        "GHSA-gj77-59wh-66hg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/prismjs/prism",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3432b4b1e4440d6592ed82b6b5b9e72f660e43a8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:prismjs:prism:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.24.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.23.0",
            "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-2021-32723.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:42.823202511Z",
      "provider": "osv",
      "references": [
        "https://github.com/PrismJS/prism/security/advisories/GHSA-gj77-59wh-66hg",
        "https://github.com/PrismJS/prism/pull/2688",
        "https://github.com/PrismJS/prism/pull/2774",
        "https://www.oracle.com/security-alerts/cpujan2022.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:oracle:application_express:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "oracle:application_express",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "21.1.4"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-32723",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385966,
  "published_at": "2021-06-28T20:15:07.857+00:00"
}