{"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": "2026-06-22T14:19:43.229Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-06-22T14:19:43.229Z"}, "title": "IBM i 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"}], "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 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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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.</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>"}]}], "x_generator": {"engine": "ibm-cvegen"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.6.0,1.8.4]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "7.5.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "7.4.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "7.3.0"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "i", "source": "cna", "vendor": "IBM"}, "product": "i", "vendor": "ibm"}], "created": "2026-06-22T16:30:08.222763+00:00", "updated": "2026-06-22T19:30:06.589792+00:00", "vendors": ["ibm", "ibm$PRODUCT$i"]}