Vulnerability-Lookup

CVE-2026-13759 (GCVE-0-2026-13759)

Vulnerability from cvelistv5 – Published: 2026-06-30 19:24 – Updated: 2026-07-03 03:56

Title

IBM WebSphere eXtreme Scale is affected by Insecure Deserilization

Summary

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 ships three ObjectInputStream subclasses (WsObjectInputStream, ObjectStreamPool$ReusableInputStream, ObjectInputStreamResolver) that install no JEP-290 class filter; when Coherence is on the classpath, multiple RCE gadget chains including RemoteConstructor.readResolve and PriorityQueue/ExtractorComparator are confirmed working, allowing a post-login attacker who can write a session attribute or a LAN-adjacent attacker on the grid replication wire to execute arbitrary code on peer WAS JVMs

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-02 00:00 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

ibm mitre root

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7278595	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version	CPE status
IBM	WebSphere Extreme Scale	Affected: 8.6.1.0 , ≤ 8.6.1.6 (semver) cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0:::::::* cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.6:::::::*

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JSON

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CNVD-2026-28624

Vulnerability from cnvd - Published: 2026-07-23

Title

IBM WebSphere eXtreme Scale反序列化注入漏洞

Description

IBM WebSphere eXtreme Scale是美国IBM公司的一个弹性数据缓存和对象网格平台。 IBM WebSphere Extreme Scale存在反序列化注入漏洞，攻击者可利用该漏洞在网格复制线路上执行任意代码。

Severity

高

Patch Name

IBM WebSphere eXtreme Scale反序列化注入漏洞的补丁

Patch Description

IBM WebSphere eXtreme Scale是美国IBM公司的一个弹性数据缓存和对象网格平台。 IBM WebSphere Extreme Scale存在反序列化注入漏洞，攻击者可利用该漏洞在网格复制线路上执行任意代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.ibm.com/support/pages/node/7278595

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-13759

Impacted products

Name
IBM WebSphere eXtreme Scale >=8.6.1.0，<=8.6.1.6

Show details on source website

JSON

To clipboard

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  "number": "CNVD-2026-28624",
  "openTime": "2026-07-23",
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  "submitTime": "2026-07-08",
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FKIE_CVE-2026-13759

Vulnerability from fkie_nvd - Published: 2026-06-30 20:17 - Updated: 2026-07-03 04:17

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7278595	Vendor Advisory

Impacted products

	Vendor	Product	Version
	ibm	websphere_extreme_scale	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0:*:*:*:*:*:*:*",
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          ],
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          "vendor": "IBM",
          "versions": [
            {
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              "version": "8.6.1.0",
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            }
          ]
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      ],
      "source": "psirt@us.ibm.com"
    }
  ],
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    }
  ],
  "id": "CVE-2026-13759",
  "lastModified": "2026-07-03T04:17:36.807",
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-13759",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-02T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-30T20:17:28.953",
  "references": [
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/7278595"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "psirt@us.ibm.com",
      "type": "Secondary"
    }
  ]
}

GHSA-XW6M-6CGM-V7QM

Vulnerability from github – Published: 2026-06-30 21:31 – Updated: 2026-06-30 21:31

Details

Severity

7.5 (High)


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

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-13759"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-30T20:17:28Z",
    "severity": "HIGH"
  },
  "details": "IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 ships three ObjectInputStream subclasses (WsObjectInputStream, ObjectStreamPool$ReusableInputStream, ObjectInputStreamResolver) that install no JEP-290 class filter; when Coherence is on the classpath, multiple RCE gadget chains including RemoteConstructor.readResolve and PriorityQueue/ExtractorComparator are confirmed working, allowing a post-login attacker who can write a session attribute or a LAN-adjacent attacker on the grid replication wire to execute arbitrary code on peer WAS JVMs",
  "id": "GHSA-xw6m-6cgm-v7qm",
  "modified": "2026-06-30T21:31:44Z",
  "published": "2026-06-30T21:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13759"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7278595"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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-2026-13759 (GCVE-0-2026-13759)

CNVD-2026-28624

FKIE_CVE-2026-13759

GHSA-XW6M-6CGM-V7QM

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Sightings

Nomenclature

Related by attack behaviour