{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "11.0.0-M1"
              },
              {
                "fixed": "11.0.24"
              },
              {
                "introduced": "10.1.0-M1"
              },
              {
                "fixed": "10.1.57"
              },
              {
                "introduced": "9.0.0.M1"
              },
              {
                "fixed": "9.0.120"
              },
              {
                "introduced": "8.5.0"
              },
              {
                "fixed": "8.5.100"
              }
            ],
            "source": "DESCRIPTION"
          },
          "events": [
            {
              "introduced": "59c81e30e2f64f5e8c1db78c4860c51850dfb0bd"
            },
            {
              "fixed": "4f33a9eca48c5cbf5963dd213b74866e629154ad"
            },
            {
              "introduced": "f2ab9ac8bc3f40ee9b2cb50b030c99df927f0429"
            },
            {
              "fixed": "5da21b1c24a6443bca5c10dc80a69a76042ca337"
            },
            {
              "introduced": "29b07def810d335012e738b22ab44d4e232b50d1"
            },
            {
              "fixed": "8fc613dd46061308028b75ed99571db00b9db4e0"
            },
            {
              "introduced": "e37b977db6f47e4380ad67114a49e8568951c953"
            },
            {
              "fixed": "eddcf278ad919382608ada1898b2c5b63675c6d5"
            }
          ],
          "repo": "https://github.com/apache/tomcat",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-193"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65927.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "last_affected": "11.0.24"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "last_affected": "10.1.57"
          },
          {
            "introduced": "9.0.0.M1"
          },
          {
            "last_affected": "9.0.120"
          },
          {
            "introduced": "8.5.0"
          },
          {
            "last_affected": "8.5.100"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "11.0.0-M1"
          },
          {
            "fixed": "11.0.24"
          },
          {
            "introduced": "10.1.0-M1"
          },
          {
            "fixed": "10.1.57"
          },
          {
            "introduced": "9.0.0.M1"
          },
          {
            "fixed": "9.0.120"
          },
          {
            "introduced": "8.5.0"
          },
          {
            "fixed": "8.5.100"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.\n\n\n\n\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121 which fix the issue.",
  "id": "CVE-2026-65927",
  "modified": "2026-08-28T03:30:47.690105755Z",
  "published": "2026-08-25T21:53:05.852Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/26/5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65927.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/st1dx1zyn5y7ny2s0sscmh6lrv3worr4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65927"
    }
  ],
  "schema_version": "1.9.0",
  "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": "Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control"
}