{"id":"CVE-2026-8858","aliases":["EUVD-2026-38284","GHSA-mfq9-47xf-5654"],"status":"published","title":"WebSphere Application Server Remote Code Execution","description":"IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0041,"percentile":0.35564,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2026-06-22T14:16:39Z","modified":"2026-10-25T23:10:00Z","products":[{"vendor":"ibm","product":"i"},{"vendor":"ibm","product":"websphere application server"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7276560","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8858"},{"url":"https://www.ibm.com/support/pages/node/7277344"},{"url":"https://github.com/advisories/GHSA-mfq9-47xf-5654"}],"sources":{"cve":[{"id":"CVE-2026-8858","title":"WebSphere Application Server Remote Code Execution","description":"IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.","status":"published","published":"2026-06-22T14:16:39.629Z","modified":"2026-07-09T19:54:33.016Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T13:48:13.398044Z"}],"euvd":[{"id":"EUVD-2026-38284","description":"IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.","status":"published","published":"2026-06-22T14:16:39Z","modified":"2026-07-09T19:54:33Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:03.742277Z"}],"ghsa":[{"id":"GHSA-mfq9-47xf-5654","title":"IBM i 7.6, 7.5, 7.4, and 7.3, IBM WebSphere Application Server and IBM WebSphere Application...","description":"IBM i 7.6, 7.5, 7.4, and 7.3, IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.","status":"published","published":"2026-06-22T18:34:16Z","modified":"2026-07-09T21:32:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:09:22.189239Z"}],"nvd":[{"id":"CVE-2026-8858","description":"IBM WebSphere Application Server and IBM WebSphere Application Server Liberty are vulnerable to remote code execution and denial of service in the WebSphere Web Server Plug-in component. This vulnerability can be exploited when an attacker impersonates the application server and sends crafted responses to the plug-in.","status":"published","published":"2026-06-22T16:16:42.967Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:12:24.912854Z"}]}}