{"cve":"CVE-2020-10185","nvd":{"published":"2020-03-05T23:15:13.353","modified":"2026-06-17T02:47:27.520","status":"Modified","description":"The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP. NOTE: this issue is potentially relevant to persons outside Yubico who operate a self-hosted OTP validation service with a non-default configuration such as an open sync pool; the issue does NOT affect YubiCloud.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","score":8.6},"cwes":["CWE-294"],"references":["https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40","https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html","https://www.yubico.com/support/security-advisories/ysa-2020-01/","https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40","https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html"],"products":["yubico:yubikey_one_time_password_validation_server"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2020-10185","score":0.01682,"percentile":0.76968,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}