{"id":"CVE-2026-105442","state":"PUBLISHED","title":"IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a deserialization of untrusted data","description":"IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service.","publishedAt":"2026-10-13T20:17:14.541Z","updatedAt":"2026-10-14T16:56:20.607Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"ibm"},"assigner":"ibm","products":["IBM WebSphere Application Server","IBM WebSphere Application Server - Liberty"],"affected":[{"vendor":"IBM","product":"WebSphere Application Server","versions":[{"version":"8.5","status":"affected"},{"version":"9.0","status":"affected"}],"cpes":["cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*"]},{"vendor":"IBM","product":"WebSphere Application Server - Liberty","versions":[{"version":"17.0.0.3","status":"affected","lessThanOrEqual":"26.0.0.10","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:26.0.0.10:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7292221"],"weaknesses":["CWE-502"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/105xxx/CVE-2026-105442.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105442","state":"PUBLISHED","datePublished":"2026-10-13T20:17:14.541Z","dateUpdated":"2026-10-14T16:56:20.607Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-10-05T13:18:39.699Z"},"containers":{"cna":{"title":"IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by a deserialization of untrusted data","descriptions":[{"lang":"en","value":"IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service."}],"affected":[{"vendor":"IBM","product":"WebSphere Application Server","versions":[{"version":"8.5","status":"affected"},{"version":"9.0","status":"affected"}],"cpes":["cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*"]},{"vendor":"IBM","product":"WebSphere Application Server - Liberty","versions":[{"version":"17.0.0.3","status":"affected","lessThanOrEqual":"26.0.0.10","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:26.0.0.10:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7292221","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502 Deserialization of Untrusted Data","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-10-13T20:17:14.541Z"},"solutions":[{"lang":"en","value":"IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR DT503516 or DT503624. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 . \n\n\n\nFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.10:\n\n\n\n· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT503516 https://www.ibm.com/support/pages/node/7292199 \n--OR--\n· Apply Fix Pack 26.0.0.11 or later (targeted availability 4Q2026).\n\n\n\n\n\nFor IBM WebSphere Application Server traditional:\n\n\n\nFor V9.0.0.0 through 9.0.5.29:\n· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT503624 https://www.ibm.com/support/pages/node/7292200 \n--OR--\n· Apply Fix Pack 9.0.5.30 or later (targeted availability 4Q2026).  \n\n\n\nFor V8.5.0.0 through 8.5.5.31:\n· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves DT503624 https://www.ibm.com/support/pages/node/7292200 \n--OR--\n· Apply Fix Pack 8.5.5.32 or later (targeted availability 4Q2026).\n\n\n\n\n\n\n\nAdditional interim fixes may be available and linked off the interim fix download page.","supportingMedia":[{"type":"text/html","base64":false,"value":"

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR DT503516 or DT503624. To determine if a feature is enabled for WebSphere Application Server Liberty, refer to How to determine if Liberty is using a specific feature. 

For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.10:

· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT503516
--OR--
· Apply Fix Pack 26.0.0.11 or later (targeted availability 4Q2026).

For IBM WebSphere Application Server traditional:

For V9.0.0.0 through 9.0.5.29:
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves DT503624
--OR--
· Apply Fix Pack 9.0.5.30 or later (targeted availability 4Q2026).  

For V8.5.0.0 through 8.5.5.31:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix that resolves DT503624
--OR--
· Apply Fix Pack 8.5.5.32 or later (targeted availability 4Q2026).

Additional interim fixes may be available and linked off the interim fix download page.

"}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T16:55:21.531162Z","id":"CVE-2026-105442","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T16:56:20.607Z"}}]}}}