FKIE_CVE-2026-41635

Vulnerability from fkie_nvd - Published: 2026-04-27 09:16 - Updated: 2026-04-29 19:08
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class filter before calling Class.forName().  Affected versions are Apache MINA 2.0.0 <= 2.0.27, 2.1.0 <= 2.1.10, and 2.2.0 <= 2.2.5. The problem is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call  IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade.
References
security@apache.orghttps://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tmMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/04/27/4Mailing List, Third Party Advisory
Impacted products
Vendor Product Version
apache mina *
apache mina *
apache mina *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:mina:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BD2A5F4E-7B53-4235-BE01-DD9B9E3614E0",
              "versionEndExcluding": "2.0.28",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:apache:mina:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E69C9219-F00B-4677-88B8-3263615586BD",
              "versionEndExcluding": "2.1.11",
              "versionStartIncluding": "2.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:apache:mina:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EC86281C-5EBB-4250-8575-50EB77E76F3E",
              "versionEndExcluding": "2.2.6",
              "versionStartIncluding": "2.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache MINA\u0027s AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.\n\n\n\n\nThe fix checks if the class is present in the accepted class filter\u00a0before calling\u00a0Class.forName().\u00a0\n\n\n\n\n\n\nAffected versions are Apache MINA 2.0.0 \u003c= 2.0.27, 2.1.0 \u003c= 2.1.10, and\n\n\n2.2.0 \u003c= 2.2.5.\n\n\n\n\n\nThe problem is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by \napplying the classname allowlist earlier.\n\n\n\n\n\nAffected are applications using Apache MINA that call\u00a0 IoBuffer.getObject().\n\n\n\n\n\nApplications using Apache MINA are advised to upgrade."
    }
  ],
  "id": "CVE-2026-41635",
  "lastModified": "2026-04-29T19:08:21.840",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security@apache.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-27T09:16:01.893",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "url": "https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/04/27/4"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}


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