Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-05-14 11:56

Modified

2026-05-15 12:24

Summary

Apache Tomcat: Digest authenticator will authenticate any unknown user

Details

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0 through 11.0.21, from 10.1.0 through 10.1.54, from 9.0.0 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect

Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "tomcat",
        "purl": "pkg:bitnami/tomcat"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.1.0"
            },
            {
              "fixed": "10.1.55"
            },
            {
              "introduced": "11.0.0"
            },
            {
              "fixed": "11.0.22"
            },
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.0.118"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-43512"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:apache:tomcat:*:*:*:*:*:maven:*:*"
    ],
    "severity": "Critical"
  },
  "details": "DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0 through 11.0.21, from 10.1.0 through 10.1.54, from 9.0.0 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0.\nOlder unsupported versions any also be affect\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.",
  "id": "BIT-tomcat-2026-43512",
  "modified": "2026-05-15T12:24:26.484Z",
  "published": "2026-05-14T11:56:45.724Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/12/8"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43512"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Apache Tomcat: Digest authenticator will authenticate any unknown user"
}

CVE-2026-43512 (GCVE-0-2026-43512)

Vulnerability from cvelistv5 – Published: 2026-05-12 15:24 – Updated: 2026-05-14 19:53

Title

Apache Tomcat: Digest authenticator will authenticate any unknown user

Summary

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any also be affect Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

Severity ?

No CVSS data available.

CWE

CWE-592 - DEPRECATED: Authentication Bypass Issues

Assigner

apache

References

1 reference

URL	Tags
https://lists.apache.org/thread/7x09x7o12solvclsl…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Tomcat	Affected: 11.0.0-M1 , ≤ 11.0.21 (semver) Affected: 10.1.0-M1 , ≤ 10.1.54 (semver) Affected: 9.0.0.M1 , ≤ 9.0.117 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Affected: 7.0.0 , ≤ 7.0.109 (semver) Unknown: 0 , < 7.0.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2026-05-12T17:40:59.559Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/05/12/8"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-43512",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-14T16:38:42.418842Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-14T19:53:34.555Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache Tomcat",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "11.0.21",
              "status": "affected",
              "version": "11.0.0-M1",
              "versionType": "semver"
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              "status": "affected",
              "version": "10.1.0-M1",
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              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.0.109",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "7.0.0",
              "status": "unknown",
              "version": "0",
              "versionType": "semver"
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      ],
      "descriptions": [
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            }
          ],
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      "metrics": [
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            "content": {
              "text": "moderate"
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            "type": "Textual description of severity"
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      "problemTypes": [
        {
          "descriptions": [
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      "providerMetadata": {
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      "references": [
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          "url": "https://lists.apache.org/thread/7x09x7o12solvclslw3sz0288xc8wx73"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
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      "title": "Apache Tomcat: Digest authenticator will authenticate any unknown user",
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  "cveMetadata": {
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2026-43512 (GCVE-0-2026-43512)

Tags

Sightings

Nomenclature