{"id":"CVE-2021-37587","aliases":["EUVD-2021-24145","GHSA-42c8-ghxg-4f28"],"status":"published","title":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","description":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00819,"percentile":0.57501,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-326","CWE-327"],"published":"2021-07-27T22:06:48Z","modified":"2026-10-20T10:54:49Z","products":[{"vendor":"jhu","product":"charm"}],"references":[{"url":"https://github.com/JHUISI/charm/issues/276","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://jhuisi.github.io/charm/charm/schemes/abenc/abenc_dacmacs_yj14.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://jhuisi.github.io/charm/_modules/abenc_maabe_yj14.html","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://eprint.iacr.org/2020/460","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://www2.hci.uni-hannover.de/papers/Tan2019.pdf","tags":["x_refsource_MISC","x_transferred","Technical Description","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-37587"},{"url":"https://github.com/advisories/GHSA-42c8-ghxg-4f28"}],"sources":{"cve":[{"id":"CVE-2021-37587","description":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","status":"published","published":"2021-07-27T22:06:48Z","modified":"2024-08-04T01:23:01.229Z","updated_at":"2026-11-02T14:32:58.028461Z"}],"euvd":[{"id":"EUVD-2021-24145","description":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","status":"published","published":"2021-07-27T22:06:48Z","modified":"2024-08-04T01:23:01Z","updated_at":"2026-11-03T03:24:26.681577Z"}],"ghsa":[{"id":"GHSA-42c8-ghxg-4f28","title":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","description":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","status":"published","published":"2022-05-24T19:09:20Z","modified":"2023-01-27T05:03:15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-326"],"updated_at":"2026-11-02T14:42:12.225813Z"}],"nvd":[{"id":"CVE-2021-37587","description":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","status":"published","published":"2021-07-30T14:15:18.543Z","modified":"2026-06-17T04:00:47.457Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-327"],"updated_at":"2026-11-02T14:06:56.185362Z"}],"osv":[{"id":"CVE-2021-37587","description":"In Charm 0.43, any single user can decrypt DAC-MACS or MA-ABE-YJ14 data.","status":"published","published":"2021-07-30T14:15:18.543Z","modified":"2026-10-20T10:54:49.311461258Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:20.434873Z"}]}}