{"api_version":"1","generated_at":"2026-04-23T08:15:24+00:00","cve":"CVE-2026-3621","urls":{"html":"https://cve.report/CVE-2026-3621","api":"https://cve.report/api/cve/CVE-2026-3621.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-3621","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3621"},"summary":{"title":"IBM WebSphere Application Server Liberty is affected by identity spoofing","description":"IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured.","state":"PUBLISHED","assigner":"ibm","published_at":"2026-04-23 00:16:45","updated_at":"2026-04-23 00:16:45"},"problem_types":["CWE-269","CWE-269 CWE-269 Improper Privilege Management"],"metrics":[{"version":"3.1","source":"psirt@us.ibm.com","type":"Primary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://www.ibm.com/support/pages/node/7270437","name":"https://www.ibm.com/support/pages/node/7270437","refsource":"psirt@us.ibm.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-3621","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3621","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"IBM","product":"WebSphere Application Server - Liberty","version":"affected 17.0.0.3 26.0.0.4 semver","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70352. IBM WebSphere Application Server Liberty is affected by identity spoofing only when the appSecurity feature (appSecurity-1.0, appSecurity-2.0, appSecurity-3.0, appSecurity-4.0, or appSecurity-5.0) is not enabled on the server. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 . \n\nFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.4:\n· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves  PH70352 https://www.ibm.com/support/pages/node/7270436 \n--OR--\n· Apply Liberty Fix Pack 26.0.0.5 or later (targeted availability 2Q2026). \n\nAdditional interim fixes may be available and linked off the interim fix download page.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"cpes":["cpe:2.3:a:ibm:websphere_application_server___liberty:17.0.0.3:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.4:*:*:*:*:*:*:*"],"product":"WebSphere Application Server - Liberty","vendor":"IBM","versions":[{"lessThanOrEqual":"26.0.0.4","status":"affected","version":"17.0.0.3","versionType":"semver"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured.</p>"}],"value":"IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-22T23:07:31.595Z","orgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","shortName":"ibm"},"references":[{"tags":["vendor-advisory","patch"],"url":"https://www.ibm.com/support/pages/node/7270437"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70352. IBM WebSphere Application Server Liberty is affected by identity spoofing only when the appSecurity feature (appSecurity-1.0, appSecurity-2.0, appSecurity-3.0, appSecurity-4.0, or appSecurity-5.0) is <strong>not enabled</strong> on the server. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to <a href=\"https://www.ibm.com/support/pages/node/6553910\" rel=\"nofollow\">How to determine if Liberty is using a specific feature</a>. <br/><br/><strong>For IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.4:</strong><br/>· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves <a href=\"https://www.ibm.com/support/pages/node/7270436\" rel=\"nofollow\">PH70352</a><br/>--OR--<br/>· Apply Liberty Fix Pack 26.0.0.5 or later (targeted availability 2Q2026). <br/><br/>Additional interim fixes may be available and linked off the interim fix download page.</p>"}],"value":"IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70352. IBM WebSphere Application Server Liberty is affected by identity spoofing only when the appSecurity feature (appSecurity-1.0, appSecurity-2.0, appSecurity-3.0, appSecurity-4.0, or appSecurity-5.0) is not enabled on the server. To determine if a feature is enabled for IBM WebSphere Application Server Liberty, refer to  How to determine if Liberty is using a specific feature https://www.ibm.com/support/pages/node/6553910 . \n\nFor IBM WebSphere Application Server Liberty 17.0.0.3 - 26.0.0.4:\n· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves  PH70352 https://www.ibm.com/support/pages/node/7270436 \n--OR--\n· Apply Liberty Fix Pack 26.0.0.5 or later (targeted availability 2Q2026). \n\nAdditional interim fixes may be available and linked off the interim fix download page."}],"title":"IBM WebSphere Application Server Liberty is affected by identity spoofing","x_generator":{"engine":"ibm-cvegen"}}},"cveMetadata":{"assignerOrgId":"9a959283-ebb5-44b6-b705-dcc2bbced522","assignerShortName":"ibm","cveId":"CVE-2026-3621","datePublished":"2026-04-22T23:07:31.595Z","dateReserved":"2026-03-05T21:53:23.170Z","dateUpdated":"2026-04-22T23:07:31.595Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-23 00:16:45","lastModifiedDate":"2026-04-23 00:16:45","problem_types":["CWE-269","CWE-269 CWE-269 Improper Privilege Management"],"metrics":{"cvssMetricV31":[{"source":"psirt@us.ibm.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.6,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"3621","Ordinal":"1","Title":"IBM WebSphere Application Server Liberty is affected by identity","CVE":"CVE-2026-3621","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"3621","Ordinal":"1","NoteData":"IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.4 IBM WebSphere Application Server Liberty is vulnerable to identity spoofing under limited conditions when an application is deployed without authentication and authorization configured.","Type":"Description","Title":"IBM WebSphere Application Server Liberty is affected by identity"}]}}}