{"id":"CVE-2018-8319","aliases":["EUVD-2018-0466","GHSA-qg3g-2mgh-33j8"],"status":"published","title":"Sensitive Data Exposure in msrcrypto","description":"A Security Feature Bypass vulnerability exists in MSR JavaScript Cryptography Library that is caused by incorrect arithmetic computations, aka \"MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability.\" This affects Microsoft Research JavaScript Cryptography Library.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.07716,"percentile":0.94649,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-682"],"published":"2018-07-11T00:00:00Z","modified":"2026-06-17T02:04:37Z","fixes":[{"ecosystem":"npm","package":"msrcrypto","fixed_in":["1.4.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"msrcrypto","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.1"}]}]},{"source":"osv","ecosystem":"npm","package":"msrcrypto","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.1"}]}]}],"products":[{"vendor":"microsoft","product":"microsoft research javascript cryptography library"},{"vendor":"microsoft","product":"research_javascript_cryptography_library"}],"references":[{"url":"http://www.securityfocus.com/bid/104655","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","web"]},{"url":"http://www.securitytracker.com/id/1041268","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry","web"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8319","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-8319","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qg3g-2mgh-33j8","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/1112","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2018-8319","description":"A Security Feature Bypass vulnerability exists in MSR JavaScript Cryptography Library that is caused by incorrect arithmetic computations, aka \"MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability.\" This affects Microsoft Research JavaScript Cryptography Library.","status":"published","published":"2018-07-11T00:00:00Z","modified":"2024-08-05T06:54:35.225Z","updated_at":"2026-11-02T14:35:04.172099Z"}],"euvd":[{"id":"EUVD-2018-0466","description":"A Security Feature Bypass vulnerability exists in MSR JavaScript Cryptography Library that is caused by incorrect arithmetic computations, aka \"MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability.\" This affects Microsoft Research JavaScript Cryptography Library.","status":"published","published":"2018-07-11T00:00:00Z","modified":"2024-08-05T06:54:35Z","updated_at":"2026-11-03T02:40:03.749866Z"}],"ghsa":[{"id":"GHSA-qg3g-2mgh-33j8","title":"Sensitive Data Exposure in msrcrypto","description":"Versions of `msrcrypto` prior to 1.4.1 are vulnerable to Sensitive Data Exposure. The package's Elliptic Curve Cryptography (ECC) implementation may leak information about a server's private ECC key. It can also allow attackers to craft invalid ECDSA signatures that pass as valid. There is no published proof-of-concept for this vulnerability.\n\n\n## Recommendation\n\nUpgrade to version 1.4.1 or later.","status":"published","published":"2018-09-10T15:19:49Z","modified":"2023-01-09T05:03:35Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-682"],"updated_at":"2026-11-02T14:36:05.705235Z"}],"nvd":[{"id":"CVE-2018-8319","description":"A Security Feature Bypass vulnerability exists in MSR JavaScript Cryptography Library that is caused by incorrect arithmetic computations, aka \"MSR JavaScript Cryptography Library Security Feature Bypass Vulnerability.\" This affects Microsoft Research JavaScript Cryptography Library.","status":"published","published":"2018-07-11T00:29:02.32Z","modified":"2026-06-17T02:04:37.557Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-682"],"updated_at":"2026-11-02T14:04:32.929986Z"}],"osv":[{"id":"GHSA-qg3g-2mgh-33j8","title":"Sensitive Data Exposure in msrcrypto","description":"Versions of `msrcrypto` prior to 1.4.1 are vulnerable to Sensitive Data Exposure. The package's Elliptic Curve Cryptography (ECC) implementation may leak information about a server's private ECC key. It can also allow attackers to craft invalid ECDSA signatures that pass as valid. There is no published proof-of-concept for this vulnerability.\n\n\n## Recommendation\n\nUpgrade to version 1.4.1 or later.","status":"published","published":"2018-09-10T15:19:49Z","modified":"2023-11-08T04:00:27.239122Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-682"],"updated_at":"2026-11-02T15:46:54.40888Z"}]}}