FKIE_CVE-2026-8646

Vulnerability from fkie_nvd - Published: 2026-06-22 16:16 - Updated: 2026-06-24 05:17
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.
References
psirt@us.ibm.comhttps://www.ibm.com/support/pages/node/7276579Vendor Advisory
Impacted products
Vendor Product Version
ibm websphere_application_server *
ibm websphere_application_server *
ibm websphere_application_server *
apple macos -
ibm aix -
ibm i -
ibm z\/os -
linux linux_kernel -
microsoft windows -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*"
          ],
          "product": "WebSphere Application Server",
          "vendor": "IBM",
          "versions": [
            {
              "lessThanOrEqual": "7.0.2 Interim Fix 035",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.3 Interim Fix 017",
              "status": "affected",
              "version": "8.5.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.6:*:*:*:*:*:*:*"
          ],
          "product": "WebSphere Application Server - Liberty",
          "vendor": "IBM",
          "versions": [
            {
              "lessThanOrEqual": "26.0.0.6",
              "status": "affected",
              "version": "17.0.0.3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "configurations": [
    {
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        {
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              "matchCriteriaId": "271A774E-CAB3-4A5F-8450-EADBBA7D8AF6",
              "versionEndExcluding": "8.5.5.30",
              "versionStartIncluding": "8.5.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BA0DBCF1-7255-420A-B0A4-04C90BAE14F6",
              "versionEndExcluding": "9.0.5.29",
              "versionStartIncluding": "9.0.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:*",
              "matchCriteriaId": "6CA8B7A4-4481-42AB-B185-4CD8AEDA4BCA",
              "versionEndExcluding": "26.0.0.7",
              "versionStartIncluding": "17.0.0.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:o:ibm:aix:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E492C463-D76E-49B7-A4D4-3B499E422D89",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:o:ibm:i:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "C684FC45-C9BA-4EF0-BD06-BB289450DD21",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:o:ibm:z\\/os:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "0E97A964-6F9E-4C87-9B90-21AE2C1DF52F",
              "vulnerable": false
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1",
              "vulnerable": false
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            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information."
    }
  ],
  "id": "CVE-2026-8646",
  "lastModified": "2026-06-24T05:17:30.680",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2,
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "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:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8646",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-23T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-22T16:16:42.360",
  "references": [
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/7276579"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "psirt@us.ibm.com",
      "type": "Secondary"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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