{"id":"CVE-2026-13773","aliases":["EUVD-2026-40386","GHSA-hgv4-prq7-c9mx"],"status":"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.","severity":{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.06097,"percentile":0.9348,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-06-30T19:20:49Z","modified":"2026-10-25T21:10:00Z","products":[{"vendor":"ibm","product":"websphere extreme scale"},{"vendor":"ibm","product":"websphere_extreme_scale"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7278594","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13773"},{"url":"https://github.com/advisories/GHSA-hgv4-prq7-c9mx"}],"sources":{"cve":[{"id":"CVE-2026-13773","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.","status":"published","published":"2026-06-30T19:20:49.312Z","modified":"2026-06-30T19:37:59.403Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:19:49.885652Z"}],"euvd":[{"id":"EUVD-2026-40386","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.","status":"published","published":"2026-06-30T19:20:49Z","modified":"2026-06-30T19:37:59Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T18:20:21.147551Z"}],"ghsa":[{"id":"GHSA-hgv4-prq7-c9mx","title":"IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes...","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.","status":"published","published":"2026-06-30T21:31:44Z","modified":"2026-06-30T21:31:52Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:09:06.582219Z"}],"nvd":[{"id":"CVE-2026-13773","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.","status":"published","published":"2026-06-30T20:17:29.227Z","modified":"2026-10-25T21:10:00.77Z","cvss":[{"version":"3.1","score":6,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:26.866638Z"}]}}