Vulnerability-Lookup

CVE-2026-11711 (GCVE-0-2026-11711)

Vulnerability from cvelistv5 – Published: 2026-09-18 19:08 – Updated: 2026-09-18 19:08

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 affected by a deserialization vulnerability in the Name Service component.

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-502 - Deserialization of Untrusted Data

Assigner

ibm mitre root

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7286610	vendor-advisorypatch

Impacted products

1 product

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:::::::*

Show details on NVD website

JSON

To clipboard

{
  "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 affected by a deserialization vulnerability in the Name Service component.\u003c/p\u003e"
            }
          ],
          "value": "IBM WebSphere Application Server 9.0 and 8.5 is affected by a deserialization vulnerability in the Name Service component."
        }
      ],
      "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": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-502",
              "description": "CWE-502 Deserialization of Untrusted Data",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-18T19:08:38.336Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "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-2026-11711",
    "datePublished": "2026-09-18T19:08:38.336Z",
    "dateReserved": "2026-06-09T00:03:47.477Z",
    "dateUpdated": "2026-09-18T19:08:38.336Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "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": [
                  {
                    "status": "affected",
                    "version": "9.0"
                  },
                  {
                    "status": "affected",
                    "version": "8.5"
                  }
                ]
              }
            ],
            "source": "psirt@us.ibm.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "IBM WebSphere Application Server 9.0 and 8.5 is affected by a deserialization vulnerability in the Name Service component."
          }
        ],
        "id": "CVE-2026-11711",
        "lastModified": "2026-09-18T20:17:01.280",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.6,
              "source": "psirt@us.ibm.com",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-09-18T20:17:01.280",
        "references": [
          {
            "source": "psirt@us.ibm.com",
            "url": "https://www.ibm.com/support/pages/node/7286610"
          }
        ],
        "sourceIdentifier": "psirt@us.ibm.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-502"
              }
            ],
            "source": "psirt@us.ibm.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}

GHSA-QXF8-2P95-9HVV

Vulnerability from github – Published: 2026-09-18 21:32 – Updated: 2026-09-18 21:32

Details

IBM WebSphere Application Server 9.0 and 8.5 is affected by a deserialization vulnerability in the Name Service component.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-11711"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-18T20:17:01Z",
    "severity": "MODERATE"
  },
  "details": "IBM WebSphere Application Server 9.0 and 8.5 is affected by a deserialization vulnerability in the Name Service component.",
  "id": "GHSA-qxf8-2p95-9hvv",
  "modified": "2026-09-18T21:32:25Z",
  "published": "2026-09-18T21:32:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11711"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7286610"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-3255

Vulnerability from csaf_certbund - Published: 2026-09-08 22:00 - Updated: 2026-09-10 22:00

Summary

IBM WebSphere Application Server: Mehrere Schwachstellen

Severity

Mittel

Scope

27 vulnerabilities in this advisory, including CVE-2026-11711.

CVE-2026-11711

Known affected: 2 products

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-11711 (GCVE-0-2026-11711)

GHSA-QXF8-2P95-9HVV

WID-SEC-W-2026-3255

Tags

Sightings

Nomenclature

Related by attack behaviour