Security advisory

{
  "id": "d167e84d801375faadbb503678437f49a234cdf7017308ebe8978e2d3a000e4a",
  "url": "https://osv.dev/vulnerability/CVE-2021-35368",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-35368",
    "summary": "OWASP ModSecurity Core Rule Set 3.1.x before 3.1.2, 3.2.x before 3.2.1, and 3.3.x before 3.3.2 is affected by a Request Body Bypass via a trailing pathname.",
    "evidence": "osv:CVE-2021-35368",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-35368",
      "aliases": [
        "CVE-2021-35368"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/coreruleset/coreruleset",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ab24a20faf28156f0495b0c07f2ff37860a3defe"
                },
                {
                  "fixed": "d3b116fce6c0dc8c8f6e4fbb4e3304af312b4812"
                },
                {
                  "introduced": "be34e996fe19078d5fd07e101af21bef1df59e2c"
                },
                {
                  "fixed": "3b12a9c2cf6f09559885b56f3acc0d7737f1eea5"
                },
                {
                  "introduced": "7776fe23f127fd2315bad0e400bdceb2cabb97dc"
                },
                {
                  "fixed": "18703f1bc47e9c4ec4096853d5fb4e2a204a07a2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.1.0"
                      },
                      {
                        "fixed": "3.1.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.2.0"
                      },
                      {
                        "fixed": "3.2.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.3.0"
                      },
                      {
                        "fixed": "3.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.2.0",
            "v3.3.1-rc1",
            "v3.3.0",
            "v3.1.1",
            "v3.1.0-rc2",
            "v3.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-35368.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:59.816712976Z",
      "provider": "osv",
      "references": [
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6MS5GMNYHFFIBWLJW7N3XAD24SLF3PFZ/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IVYUJOKHDEXFTM2CZMEESJ6TZSPVNSSZ/",
        "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html",
        "https://owasp.org/www-project-modsecurity-core-rule-set/",
        "https://security.gentoo.org/glsa/202305-25",
        "https://coreruleset.org/20210630/cve-2021-35368-crs-request-body-bypass/",
        "https://portswigger.net/daily-swig/lessons-learned-how-a-severe-vulnerability-in-the-owasp-modsecurity-core-rule-set-sparked-much-needed-change",
        "https://portswigger.net/daily-swig/waf-bypass-severe-owasp-modsecurity-core-rule-set-bug-was-present-for-several-years"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "36"
                  },
                  {
                    "last_affected": "36"
                  },
                  {
                    "introduced": "37"
                  },
                  {
                    "last_affected": "37"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-35368",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 439399,
  "published_at": "2021-11-05T18:15:09.317+00:00"
}