{"schema":"threatline.record/2","record":{"id":"CVE-2026-103655","aliases":[],"summary":"MISP TOTP Code Replay Allows Duplicate Authentication Within Validity Period","details":"MISP contains a vulnerability in its two-factor authentication (TOTP) verification process that permits a valid one-time code to be accepted more than once within its time-based validity window.\n\nThe issue exists in the user login flow where a TOTP code is verified as a second authentication factor. Because the system did not record whether a given TOTP period had already been consumed, the same code remained valid for its entire time window (typically 30 seconds). An attacker who captures a legitimate code during a user's login could replay it to authenticate a second session as that user.\n\nPreconditions:\n\n- The target user has TOTP-based two-factor authentication enabled.\n\n- The attacker is in a position to observe or intercept the TOTP code during a legitimate login (e.g., network-level interception, shoulder surfing, or a compromised client).\n\n- The replay must occur within the TOTP validity period.\n\nSecurity impact:\n\n- Unauthorized account access by replaying a captured one-time code.\n\n- Potential compromise of threat-intelligence data and administrative functions accessible to the targeted user.\n\nAffected versions: <v2.5.48.","categories":["Unclassified"],"product":"MISP","vendor":"MISP","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103655","source_modified_at":"2026-10-01T15:25:55.269Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"MISP","vendor":"MISP","versions":[{"lessThan":"2.5.48","status":"affected","version":"0","versionType":"semver"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103655","source_modified_at":"2026-10-01T15:25:55.269Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"MISP","ecosystem":null},"version":"2.5.48","basis":"first unaffected version stated in the CVE record"}],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.0031,"percentile":0.22699,"score_date":"2026-10-23"},"published_at":"2026-10-01T08:08:55.013Z","modified_at":"2026-10-01T15:25:55.269Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-103655","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-01T15:25:55.269Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-103655","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/MISP/MISP/commit/a020fa47b","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-01T15:25:45.460434Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-01T15:25:55.269Z","content_hash":"65b52ad2d7b53d1f71148a4a7048e88544e75b9915b5a59b86e0ee9089ae70ec"}}