{"id":"CVE-2026-5598","summary":"Non-constant time comparisons risk private key leakage in FrodoKEM.","details":"Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules). This vulnerability is associated with program files FrodoEngine.Java.\n\nThis issue affects BC-JAVA: from 1.71 before 1.84.","modified":"2026-05-01T18:44:38.725494910Z","published":"2026-04-15T09:05:56.277Z","related":["CGA-vgfm-4x3c-36fm","SUSE-SU-2026:1639-1","SUSE-SU-2026:21404-1","openSUSE-SU-2026:10571-1","openSUSE-SU-2026:20627-1"],"database_specific":{"cna_assigner":"bcorg","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5598.json","cwe_ids":["CWE-385"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5598.json"},{"type":"PACKAGE","url":"https://github.com/bcgit/bc-java"},{"type":"FIX","url":"https://github.com/bcgit/bc-java/commit/8692e6b2b191fc4aafa32545c7a78bdb9bf110c5"},{"type":"FIX","url":"https://github.com/bcgit/bc-java/commit/94abbd56413dfdac651fd878bc60253871ef5e87"},{"type":"ADVISORY","url":"https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%905598"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5598"},{"type":"WEB","url":"https://www.bouncycastle.org/download/bouncy-castle-java/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bcgit/bc-java","events":[{"introduced":"1349bb03cff0b0023ef3247690410441f33b05b0"},{"fixed":"d716d7716a452bad283323aefd88ff21eba8deef"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"1.71"},{"fixed":"1.84"}]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-5598.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/S:P/AU:Y/U:Red"}]}