{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-5516", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-04-03T21:59:13.972Z", "datePublished": "2026-05-27T13:00:04.029Z", "dateUpdated": "2026-06-02T16:13:02.756Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-05-27T13:00:04.029Z" }, "title": "IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability", "affected": [ { "vendor": "IBM", "product": "WebSphere Application Server - Liberty", "versions": [ { "status": "affected", "version": "22.0.0.11", "lessThanOrEqual": "26.0.0.5", "versionType": "semver" } ], "cpes": [ "cpe:2.3:a:ibm:websphere_application_server___liberty:22.0.0.11:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:websphere_application_server___liberty:26.0.0.5:*:*:*:*:*:*:*" ] } ], "descriptions": [ { "lang": "en", "value": "IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.
" } ] } ], "references": [ { "url": "https://www.ibm.com/support/pages/node/7273425", "tags": [ "vendor-advisory", "patch" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseSeverity": "MEDIUM", "baseScore": 4.4, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N" } } ], "solutions": [ { "lang": "en", "value": "IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70798. 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 22.0.0.11 - 26.0.0.5 using the appSecurity-3.0, appSecurity-4.0 or appSecurity-5.0 feature(s): \n· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70798 https://www.ibm.com/support/pages/node/7273239 \n--OR--\n· Apply Liberty Fix Pack 26.0.0.6 or later (targeted availability 3Q2026). \n\nAdditional interim fixes may be available and linked off the interim fix download page.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains the fix for APAR PH70798. 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.
For IBM WebSphere Application Server Liberty 22.0.0.11 - 26.0.0.5 using the appSecurity-3.0, appSecurity-4.0 or appSecurity-5.0 feature(s):
· Upgrade to minimal fix pack levels as required by the interim fix and then apply the Interim Fix that resolves PH70798
--OR--
· Apply Liberty Fix Pack 26.0.0.6 or later (targeted availability 3Q2026).
Additional interim fixes may be available and linked off the interim fix download page.