IBM i is Affected By Denial of Service, HTTP Request Smuggling, and Remote Code Execution Vulnerabilities in IBM WebSphere Application Server Liberty [, , , , ]

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    "cveId": "CVE-2026-8858",
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "dateUpdated": "2026-06-23T03:55:59.421Z",
    "dateReserved": "2026-05-18T18:06:05.131Z",
    "datePublished": "2026-06-22T14:16:39.629Z",
    "state": "PUBLISHED"
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      "title": "IBM i is Affected By Denial of Service, HTTP Request Smuggling, and Remote Code Execution Vulnerabilities in IBM WebSphere Application Server Liberty [, , , , ]",
      "descriptions": [
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          "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.",
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              "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>"
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      "affected": [
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          "product": "i",
          "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:*:*:*:*:*:*:*"
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              "version": "7.6.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.8.4"
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              "version": "7.5.0",
              "status": "affected",
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              "version": "7.4.0",
              "status": "affected",
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              "version": "7.3.0",
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      "problemTypes": [
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              "lang": "en",
              "description": "CWE-94 Improper Control of Generation of Code ('Code Injection')",
              "cweId": "CWE-94",
              "type": "CWE"
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      "references": [
        {
          "url": "https://www.ibm.com/support/pages/node/7277344",
          "tags": [
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            "attackVector": "ADJACENT_NETWORK",
            "attackComplexity": "HIGH",
            "privilegesRequired": "NONE",
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            "scope": "UNCHANGED",
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            "baseScore": 7.5,
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      "solutions": [
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          "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.",
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              "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>"
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