GHSA-F525-44XV-F2QJ

Vulnerability from github – Published: 2026-08-26 00:30 – Updated: 2026-10-27 14:45
VLAI
Summary
Apache Tomcat - HTTP/2 no-authority bypass of strict SNI validation
Details

Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.

This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.

Users are recommended to upgrade to version 11.0.25, 10.1.59 or 9.0.121, which fix the issue.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat-coyote"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.0.20"
            },
            {
              "fixed": "11.0.25"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.1.57"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat-coyote"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.53"
            },
            {
              "fixed": "10.1.59"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat:tomcat-coyote"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.115"
            },
            {
              "fixed": "9.0.121"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat.embed:tomcat-embed-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.0.20"
            },
            {
              "fixed": "11.0.25"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.1.57"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat.embed:tomcat-embed-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.53"
            },
            {
              "fixed": "10.1.59"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tomcat.embed:tomcat-embed-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.115"
            },
            {
              "fixed": "9.0.121"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-65637"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-27T14:45:10Z",
    "nvd_published_at": "2026-08-25T22:17:05Z",
    "severity": "CRITICAL"
  },
  "details": "Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.\n\nThis issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.\n\nUsers are recommended to upgrade to version 11.0.25, 10.1.59 or 9.0.121, which fix the issue.",
  "id": "GHSA-f525-44xv-f2qj",
  "modified": "2026-10-27T14:45:10Z",
  "published": "2026-08-26T00:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-65637"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/40012414df828a56126f76a7339669c7c919aae7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/8639b20f045c88f356b887204f52e897399f0de7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/commit/b823e88da077f5fa973e34d72359bded9f621e3c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/tomcat"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/releases/tag/10.1.58"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/releases/tag/11.0.25"
    },
    {
      "type": "WEB",
      "url": "https://github.com/apache/tomcat/releases/tag/9.0.121"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/djog953z1ohsyt25bdvhfzbmsy22vgcj"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-10.html"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-11.html"
    },
    {
      "type": "WEB",
      "url": "https://tomcat.apache.org/security-9.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Tomcat - HTTP/2 no-authority bypass of strict SNI validation"
}



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