{"id":"CVE-2026-59396","aliases":[],"cve":{"records":[{"id":"CVE-2026-59396","source":"vmware","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-07-04T18:15:31.160Z","published":"2026-10-30T08:24:47.718Z","modified":"2026-10-30T20:10:01.484Z"}],"publishers":[{"name":"vmware","role":"CNA","organizationId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","modified":"2026-10-30T08:24:47.718Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-30T20:10:01.484Z"}],"references":[{"url":"https://www.cloudfoundry.org/blog/cve-2026-59396-dos-vulnerability-in-uaa-related-to-jwks-uri-handling-2/","tags":[],"source":"vmware"}],"weaknesses":[{"id":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","source":"CISA-ADP"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-30T15:28:01.628068Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"DoS Vulnerability in UAA Related to JWKS URI Handling","titleSource":"vmware","descriptionSource":"vmware","description":"A denial-of-service vulnerability exists in UAA's private_key_jwt client-authentication mechanism. When UAA retrieves a remote JWKS URI, it caches the response. Invalid authentication attempts can trigger full deserialization of this cached data. An attacker with prerequisites (write access to clients or a compromised endpoint) can send anonymous requests that force repeated parsing of large cached objects, causing excessive CPU usage and potential Java heap exhaustion via OutOfMemoryError, resulting in service unavailability.","score":6.9,"severity":"medium","published":"2026-10-30T08:24:47.718Z","modified":"2026-10-30T20:10:01.484Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Cloud Foundry","name":"UAA","platforms":[],"versions":[{"version":"76.23.0","status":"affected","lessThan":"79.9.0","versionType":"OSS"}],"cpes":[],"source":"vmware","url":"https://www.cve.org/CVERecord?id=CVE-2026-59396"},{"vendor":"Cloud Foundry","name":"cf-deployment","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"60.11.0","versionType":"oss"}],"cpes":[],"source":"vmware","url":"https://www.cve.org/CVERecord?id=CVE-2026-59396"}],"remediation":[],"references":["https://www.cloudfoundry.org/blog/cve-2026-59396-dos-vulnerability-in-uaa-related-to-jwks-uri-handling-2/"],"sources":[{"name":"CVE","id":"CVE-2026-59396","modified":"2026-10-30T20:10:01.484Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-59396"}],"assessments":[{"source":"vmware","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.9},{"source":"vmware","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","score":4.9}],"sourceAffected":[],"observedAt":"2026-10-30T20:23:56.758Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T02:55:33.139Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-10-30T08:45:33.262Z","attemptedAt":"2026-10-30T08:45:33.262Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-10-30T08:45:33.219Z","attemptedAt":"2026-10-30T08:45:33.219Z"},{"source":"EUVD","status":"refresh-failed","attemptedAt":"2026-10-30T08:45:33.021Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-30T08:45:33.680Z","attemptedAt":"2026-10-30T08:45:33.680Z"}],"evidence":[],"aiSummary":null}