{"id":"CVE-2026-59648","summary":"OpenPGP Argon2 S2K honours attacker-chosen memory and passes","details":"In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).","modified":"2026-08-08T19:03:22.296403235Z","published":"2026-08-03T00:45:34.967Z","related":["openSUSE-SU-2026:11445-1","openSUSE-SU-2026:21538-1"],"database_specific":{"cna_assigner":"bcorg","cwe_ids":["CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59648.json","unresolved_ranges":[{"extracted_events":[{"introduced":"1.0.6"},{"fixed":"1.0.13"},{"introduced":"2.0.0"},{"fixed":"2.0.13"},{"introduced":"2.1.0"},{"fixed":"2.1.13"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://www.bouncycastle.org/download/bouncy-castle-java-fips/"},{"type":"WEB","url":"https://www.bouncycastle.org/download/bouncy-castle-java-lts/"},{"type":"WEB","url":"https://www.bouncycastle.org/download/bouncy-castle-java/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59648.json"},{"type":"ADVISORY","url":"https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059648"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59648"},{"type":"FIX","url":"https://github.com/bcgit/bc-java/commit/c915cc3f7a8d58f5ea2f88f01dfef2d402dd0799"},{"type":"PACKAGE","url":"https://github.com/bcgit/bc-java"},{"type":"PACKAGE","url":"https://github.com/bcgit/bc-lts-java"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bcgit/bc-java","events":[{"introduced":"1349bb03cff0b0023ef3247690410441f33b05b0"},{"fixed":"57fbd3c501f7a369f64eda311d6a709fc0bcae84"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"1.71"},{"fixed":"1.85"}]}},{"type":"GIT","repo":"https://github.com/bcgit/bc-lts-java","events":[{"introduced":"468b5082f3f0971e80bf9edb7029c17b39b9ba0c"},{"fixed":"f101b232c5d3e07ecdd504210a57e43831d6cd65"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"2.73.0"},{"fixed":"2.73.12"}]}}],"versions":["r2rv73dot11","r2rv73dot10","r2rv73dot9","r2rv73dot8","r2rv73dot6","r2rv73dot4","r2rv73dot3","r2rv73dot1","r2rv73dot0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-59648.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber"}]}