Security advisory

{
  "id": "a10f54db30b1088fbab64df79a32fb06f1e201a25faf8e0589296d94aa880650",
  "url": "https://osv.dev/vulnerability/CVE-2021-33580",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33580",
    "summary": "User controlled `request.getHeader(\"Referer\")`, `request.getRequestURL()` and `request.getQueryString()` are used to build and run a regex expression. The attacker doesn't have to use a browser and may send a specially crafted Referer header programmatically. Since the attacker controls the string and the regex pattern he may cause a ReDoS by regex catastrophic backtracking on the server side. This problem has been fixed in Roller 6.0.2.",
    "evidence": "osv:CVE-2021-33580",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-33580",
      "aliases": [
        "CVE-2021-33580"
      ],
      "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/apache/roller",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0f72a27a00271018448481aac321567a9e849d9b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:roller:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "6.0.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "roller-6.0.1",
            "roller-6.0.0-rc-3",
            "roller-6.0.0",
            "roller-5.2.3-rc-3",
            "roller-5.2.0-final",
            "roller-5.1.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33580.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:51.882786397Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/r9d967d80af941717573e531db2c7353a90bfd0886e9b5d5d79f75506%40%3Cuser.roller.apache.org%3E"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33580",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 437570,
  "published_at": "2021-08-18T08:15:06.173+00:00"
}