{"id":"CVE-2026-13773","state":"PUBLISHED","title":"IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol","description":"IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.string_to_object() on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound IIOP SSRF to an attacker-chosen host; when chained with the IBM ORB's getUserException class-instantiation flaw (WAS-26), this SSRF escalates to remote code execution on the calling JVM.","publishedAt":"2026-06-30T19:20:49.312Z","updatedAt":"2026-06-30T19:37:59.403Z","severity":{"score":6,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","source":"ibm"},"assigner":"ibm","products":["IBM WebSphere Extreme Scale"],"affected":[{"vendor":"IBM","product":"WebSphere Extreme Scale","versions":[{"version":"8.6.1.0","status":"affected","lessThanOrEqual":"8.6.1.6","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.6:*:*:*:*:*:*:*"]}],"references":["https://www.ibm.com/support/pages/node/7278594"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/13xxx/CVE-2026-13773.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-13773","state":"PUBLISHED","datePublished":"2026-06-30T19:20:49.312Z","dateUpdated":"2026-06-30T19:37:59.403Z","assignerShortName":"ibm","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateReserved":"2026-06-29T21:52:34.923Z"},"containers":{"cna":{"title":"IBM WebSphere eXtreme Scale is affected by server side request forgery when ORB is used as Transport Protocol","descriptions":[{"lang":"en","value":"IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.string_to_object() on an attacker-controlled IOR string during Java deserialization, turning any unfiltered ObjectInputStream sink in WAS into outbound IIOP SSRF to an attacker-chosen host; when chained with the IBM ORB's getUserException class-instantiation flaw (WAS-26), this SSRF escalates to remote code execution on the calling JVM."}],"affected":[{"vendor":"IBM","product":"WebSphere Extreme Scale","versions":[{"version":"8.6.1.0","status":"affected","lessThanOrEqual":"8.6.1.6","versionType":"semver"}],"cpes":["cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_extreme_scale:8.6.1.6:*:*:*:*:*:*:*"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7278594","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":6,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918 Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"ibm","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","dateUpdated":"2026-06-30T19:20:49.312Z"},"solutions":[{"lang":"en","value":"Vulnerability is not applicable if Transport protocol is not Object Request Broker (ORB)  rather IBM eXtremeIO (XIO) .Please do not use ORB as transport protocol and use XIO as transport protocol. Please follow the below document for setting XIO as transport protocol\n https://www.ibm.com/docs/en/SSTVLU_8.6.1/com.ibm.websphere.extremescale.doc/txsconfigxstransport.html \nORB is deprecated and we have removed ORB support from 8.6.2.* version . We recommend customers to migrate to 8.6.2.*.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Vulnerability is not applicable if Transport protocol is not Object Request Broker (ORB)  rather IBM eXtremeIO (XIO) .Please do not use ORB as transport protocol and use XIO as transport protocol. Please follow the below document for setting XIO as transport protocol<br/><a href=\"https://www.ibm.com/docs/en/SSTVLU_8.6.1/com.ibm.websphere.extremescale.doc/txsconfigxstransport.html\" rel=\"nofollow\">https://www.ibm.com/docs/en/SSTVLU_8.6.1/com.ibm.websphere.extremescale.doc/txsconfigxstransport.html</a><br/>ORB is deprecated and we have removed ORB support from 8.6.2.* version . We recommend customers to migrate to 8.6.2.*.</p>"}]}],"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-30T19:37:43.519923Z","id":"CVE-2026-13773","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-30T19:37:59.403Z"}}]}}}