{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8858","assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","state":"PUBLISHED","assignerShortName":"ibm","dateReserved":"2026-05-18T18:06:05.131Z","datePublished":"2026-06-22T14:16:39.629Z","dateUpdated":"2026-06-24T16:52:06.127Z"},"containers":{"cna":{"providerMetadata":{"orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm","dateUpdated":"2026-06-24T16:52:06.127Z"},"title":"WebSphere Application Server is Affected By Denial of Service, HTTP Request Smuggling, and Remote Code Execution Vulnerabilities in IBM WebSphere Application Server Liberty [, , , , ]","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-94","description":"CWE-94 Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"affected":[{"vendor":"IBM","product":"i","versions":[{"status":"affected","version":"7.6.0","lessThanOrEqual":"1.8.4","versionType":"semver"},{"status":"affected","version":"7.5.0","versionType":"semver"},{"status":"affected","version":"7.4.0","versionType":"semver"},{"status":"affected","version":"7.3.0","versionType":"semver"}],"defaultStatus":"unaffected","cpes":["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*","cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>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.</p>"}]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7277344","tags":["vendor-advisory","patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"ADJACENT_NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}}],"solutions":[{"lang":"en","value":"IBM strongly recommends addressing the vulnerabilities now.\n\nIBM i Release5770-SS1 Option 3\nPTF Number(s)PTF Download Link(s)7.6SJ10122 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10122 7.5SJ10121 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10121 7.4SJ10120 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10120 7.3SJ10119 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10119 \n\n\n\nIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p><strong>IBM strongly recommends addressing the vulnerabilities now.</strong></p><div><table><thead><tr><td><strong>IBM i Release</strong></td><td><strong>5770-SS1 Option 3<br>PTF Number(s)</strong></td><td><strong>PTF Download Link(s)</strong></td></tr></thead><tbody><tr><td>7.6</td><td>SJ10122</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10122\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10122</a></td></tr><tr><td>7.5</td><td>SJ10121</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10121\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10121</a></td></tr><tr><td>7.4</td><td>SJ10120</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10120\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10120</a></td></tr><tr><td>7.3</td><td>SJ10119</td><td><a href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10119\" rel=\"noopener noreferrer nofollow\">https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10119</a></td></tr></tbody></table></div><p>IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.</p>"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"ibm-cvegen"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-23T03:56:00.365269Z","id":"CVE-2026-8858","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-23T18:48:11.431Z"}}]}}