{"id":"CVE-2026-93907","state":"PUBLISHED","title":"IBM WebSphere Application Server is affected by a bypass authentication vulnerability","description":"IBM WebSphere Application Server 8.5, and 9.0 could allow a remote attacker to bypass authentication by exploiting a flaw in the CSIv2 inbound propagation handler.","publishedAt":"2026-10-13T13:47:31.780Z","updatedAt":"2026-10-14T03:59:00.509Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"ibm"},"assigner":"ibm","products":["IBM WebSphere Application Server"],"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:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7292216"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93907.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93907","state":"PUBLISHED","datePublished":"2026-10-13T13:47:31.780Z","dateUpdated":"2026-10-14T03:59:00.509Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-09-18T20:47:34.247Z"},"containers":{"cna":{"title":"IBM WebSphere Application Server is affected by a bypass authentication vulnerability","descriptions":[{"lang":"en","value":"IBM WebSphere Application Server 8.5, and 9.0 could allow a remote attacker to bypass authentication by exploiting a flaw in the CSIv2 inbound propagation handler."}],"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:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7292216","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.1,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287 Improper Authentication","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-10-13T13:47:31.780Z"},"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 DT502673.\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 DT502673 https://www.ibm.com/support/pages/node/7292211 https://www.ibm.com/support/pages/node/7292211 \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 the interim fix and then apply the Interim Fix that resolves DT502673 https://www.ibm.com/support/pages/node/7292211 https://www.ibm.com/support/pages/node/7292211 \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 DT502673.

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 DT502673
--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 the interim fix and then apply the Interim Fix that resolves DT502673
--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":"2026-10-13T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-93907"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T03:59:00.509Z"}}]}}}