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CVE-2026-9336 (GCVE-0-2026-9336)

Vulnerability from cvelistv5 – Published: 2026-09-10 18:45 – Updated: 2026-09-10 18:45
VLAI
Title
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Summary
IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem space.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
URL Tags
https://www.ibm.com/support/pages/node/7286610 vendor-advisorypatch
Impacted products
Vendor Product Version CPE status
IBM WebSphere Application Server Affected: 9.0
Affected: 8.5
    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:*:*:*:*:*:*:*
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": [
            {
              "status": "affected",
              "version": "9.0"
            },
            {
              "status": "affected",
              "version": "8.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem space.\u003c/p\u003e"
            }
          ],
          "value": "IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem space."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
            }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-306",
              "description": "CWE-306 Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T18:45:02.163Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
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      "references": [
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          "tags": [
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            "patch"
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          "url": "https://www.ibm.com/support/pages/node/7286610"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below.\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor IBM WebSphere Application Server traditional:\u003c/strong\u003e\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V9.0.0.0 through 9.0.5.28:\u003c/strong\u003e\u003cbr/\u003e\u00b7 Apply Fix Pack \u003ca href=\"SB0030823\" rel=\"nofollow\"\u003e9.0.5.29\u003c/a\u003e (availability September 2026) or later fix pack.\u00a0\u003c/p\u003e\u003cp\u003e\u003cstrong\u003eFor V8.5.0.0 through 8.5.5.30:\u003c/strong\u003e\u003cbr/\u003e\u00b7 Apply Fix Pack \u003ca href=\"https://www.ibm.com/support/pages/node/7285869\" rel=\"nofollow\"\u003e8.5.5.31\u003c/a\u003e (availability September 2026) or later fix pack.\u00a0\u003c/p\u003e"
            }
          ],
          "value": "IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below.\n\n\n\nFor IBM WebSphere Application Server traditional:\n\n\n\nFor V9.0.0.0 through 9.0.5.28:\n\u00b7 Apply Fix Pack  9.0.5.29 SB0030823  (availability September 2026) or later fix pack.\u00a0\n\n\n\nFor V8.5.0.0 through 8.5.5.30:\n\u00b7 Apply Fix Pack  8.5.5.31 https://www.ibm.com/support/pages/node/7285869  (availability September 2026) or later fix pack."
        }
      ],
      "title": "IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-9336",
    "datePublished": "2026-09-10T18:45:02.163Z",
    "dateReserved": "2026-05-22T23:38:48.910Z",
    "dateUpdated": "2026-09-10T18:45:02.163Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-9336",
      "date": "2026-09-11",
      "epss": "0.00221",
      "percentile": "0.1257"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-9336\",\"sourceIdentifier\":\"psirt@us.ibm.com\",\"published\":\"2026-09-10T19:17:42.680\",\"lastModified\":\"2026-09-10T19:44:21.980\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to a denial of service, caused by sending a specially-crafted HTTP request to an administrative endpoint. A remote attacker could exploit this vulnerability to cause the server to exhaust filesystem space.\"}],\"affected\":[{\"source\":\"psirt@us.ibm.com\",\"affectedData\":[{\"vendor\":\"IBM\",\"product\":\"WebSphere Application Server\",\"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:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"9.0\",\"status\":\"affected\"},{\"version\":\"8.5\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-306\"}]}],\"references\":[{\"url\":\"https://www.ibm.com/support/pages/node/7286610\",\"source\":\"psirt@us.ibm.com\"}]}}"
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
  • 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.


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