{"id":"CVE-2024-8796","summary":"Insufficient Default OTP Shared Secret Length","details":"Under the default configuration, Devise-Two-Factor versions \u003e= 2.2.0 & \u003c 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes.","aliases":["GHSA-qjxf-mc72-wjr2"],"modified":"2026-07-11T03:53:32.762796607Z","published":"2024-09-17T17:12:13.468Z","database_specific":{"cna_assigner":"SNPS","cwe_ids":["CWE-331"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/8xxx/CVE-2024-8796.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/8xxx/CVE-2024-8796.json"},{"type":"ADVISORY","url":"https://github.com/devise-two-factor/devise-two-factor/security/advisories/GHSA-qjxf-mc72-wjr2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-8796"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/devise-two-factor/devise-two-factor","events":[{"introduced":"267c14d25b03c112f7f1853e4fa0732ed905314b"},{"fixed":"cc6f34423d9c6af9f3e02be478c3c40dc7462e19"},{"introduced":"5819f75b5a10d04c08cc6f4098263d5331aa1e76"}],"database_specific":{"extracted_events":[{"introduced":"4.0.0"},{"fixed":"6.0.0"},{"introduced":"1.0.0"},{"last_affected":"1.0.0"}],"source":"AFFECTED_FIELD"}}],"versions":["1.0.0","v5.1.0","v4.0.2","v5.0.0","v4.0.1","v4.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-8796.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}