{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77816", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-08-21T14:21:33.569Z", "datePublished": "2026-10-13T20:15:07.289Z", "dateUpdated": "2026-10-13T20:15:07.289Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-10-13T20:15:07.289Z"}, "title": "IBM WebSphere Application Server Liberty Improper Certificate Validation", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-295", "description": "CWE-295 Improper Certificate Validation", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "WebSphere Application Server - Liberty", "versions": [{"status": "affected", "version": "17.0.0.3", "lessThanOrEqual": "26.0.0.9", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.9:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7291394", "tags": ["vendor-advisory", "patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"}}], "solutions": [{"lang": "en", "value": "IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below.\n\n\n\nFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.9:\n\u00b7 Apply Liberty Fix Pack 26.0.0.10 https://www.ibm.com/support/pages/node/7289741 (availability October 2026) or later fix pack.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below.</p><p><strong>For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.9:</strong><br/>\u00b7 Apply Liberty Fix Pack <a href=\"https://www.ibm.com/support/pages/node/7289741\" rel=\"nofollow\">26.0.0.10</a> (availability October 2026) or later fix pack.\u00a0</p>"}]}]}}}

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.9:*:*:*:*:*:*:*"], "product": "WebSphere Application Server - Liberty", "vendor": "IBM", "versions": [{"lessThanOrEqual": "26.0.0.9", "status": "affected", "version": "17.0.0.3", "versionType": "semver"}]}], "source": "psirt@us.ibm.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information."}], "id": "CVE-2026-77816", "lastModified": "2026-10-13T21:18:21.033", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 4.2, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-10-13T21:18:21.033", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7291394"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

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