Vulnerability-Lookup

FKIE_CVE-2026-34500

Vulnerability from fkie_nvd - Published: 2026-04-09 20:16 - Updated: 2026-04-10 00:16

Severity ?

Summary

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/04/09/29

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue."
    }
  ],
  "id": "CVE-2026-34500",
  "lastModified": "2026-04-10T00:16:35.500",
  "metrics": {},
  "published": "2026-04-09T20:16:25.330",
  "references": [
    {
      "source": "security@apache.org",
      "url": "https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/09/29"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Received"
}

CVE-2026-34500 (GCVE-0-2026-34500)

Vulnerability from cvelistv5 – Published: 2026-04-09 19:36 – Updated: 2026-04-10 14:22

Title

Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled

Summary

Severity ?

No CVSS data available.

CWE

CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled

Assigner

apache

References

URL

Tags

https://lists.apache.org/thread/7rcl4zdxryc8hy3ht…

vendor-advisory

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache Tomcat	Affected: 11.0.0-M14 , ≤ 11.0.20 (semver) Affected: 10.1.22 , ≤ 10.1.53 (semver) Affected: 9.0.92 , ≤ 9.0.116 (semver)

Credits

Haruki Oyama (Waseda University)

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2026-04-09T23:15:55.928Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/04/09/29"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-34500",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-10T14:21:50.556349Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-287",
                "description": "CWE-287 Improper Authentication",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-10T14:22:31.310Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "product": "Apache Tomcat",
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          "versions": [
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              "lessThanOrEqual": "11.0.20",
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              "versionType": "semver"
            },
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              "status": "affected",
              "version": "10.1.22",
              "versionType": "semver"
            },
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              "status": "affected",
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              "versionType": "semver"
            }
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Haruki Oyama (Waseda University)"
        }
      ],
      "descriptions": [
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              "type": "text/html",
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          "value": "CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue."
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      "metrics": [
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      "providerMetadata": {
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      "references": [
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          "url": "https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled",
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    "datePublished": "2026-04-09T19:36:52.857Z",
    "dateReserved": "2026-03-30T08:34:56.185Z",
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Sightings

Author	Source	Type	Date

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

FKIE_CVE-2026-34500

CVE-2026-34500 (GCVE-0-2026-34500)

Tags

Sightings

Nomenclature