{"id":"CVE-2019-12887","aliases":["GHSA-rqg8-xjp2-pg9w","PYSEC-2019-103"],"url":"https://o3.security/vulnerability/CVE-2019-12887","summary":"LinOTP replay vulnerability with auto resynchronization enabled for TOTP token","details":"LinOTP is prone to a replay attack with activated automatic resynchronization. This vulnerability may allow an attacker to successfully log in with OTP values recorded at a previous point in time.\n\nThis attack is only possible if automatic resynchronization is enabled for the TOTP token type. The automatic resynchronization  is deactivated by default. All other tokens are unaffected.","published":"2019-06-27T14:15:10.457Z","modified":"2026-10-24T10:30:46.278578859Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.01173,"percentile":0.65982,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"linotp","fixedVersion":"2.11.1"}],"fix":{"url":"https://github.com/LinOTP/LinOTP/commit/6d28d93af59d2ce0d844a6a3282148064efc6ad8","label":"LinOTP/LinOTP@6d28d93"},"references":[{"type":"ADVISORY","url":"https://www.linotp.org/CVE-2019-12887.txt"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12887"},{"type":"WEB","url":"https://github.com/LinOTP/LinOTP/commit/6d28d93af59d2ce0d844a6a3282148064efc6ad8"},{"type":"PACKAGE","url":"https://github.com/LinOTP/LinOTP"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/linotp/PYSEC-2019-103.yaml"},{"type":"WEB","url":"https://linotp.org/linotp-hotfix-autoresync.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:46.278578859Z"}}