{"id":"CVE-2026-92003","aliases":["EUVD-2026-78439","GHSA-rr6q-fmv4-p23m"],"status":"published","title":"MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion","description":"Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.\n\n\nTwo API authentication failure branches wrote directly to the Log model:\n\n - API requests with no authentication key;\n - requests supplying an API key with an incorrect length\n\n\n\n\nUnlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.\n\nVersion affected: ≤2.5.45","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00571,"percentile":0.47696,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400","CWE-770"],"published":"2026-09-15T11:43:19Z","modified":"2026-10-28T02:31:10Z","products":[{"vendor":"misp","product":"misp"}],"references":[{"url":"https://github.com/MISP/MISP/commit/2bf887433","tags":["patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92003","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rr6q-fmv4-p23m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92003.json","tags":["advisory"]},{"url":"https://github.com/MISP/MISP","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-92003","title":"MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion","description":"Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.\n\n\nTwo API authentication failure branches wrote directly to the Log model:\n\n - API requests with no authentication key;\n - requests supplying an API key with an incorrect length\n\n\n\n\nUnlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T11:43:19.403Z","modified":"2026-09-15T12:32:06.515Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-770","CWE-400"],"updated_at":"2026-11-02T13:48:24.536396Z"}],"euvd":[{"id":"EUVD-2026-78439","description":"Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.\n\n\nTwo API authentication failure branches wrote directly to the Log model:\n\n - API requests with no authentication key;\n - requests supplying an API key with an incorrect length\n\n\n\n\nUnlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T11:43:19Z","modified":"2026-09-15T12:32:06Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:28:18.438671Z"}],"ghsa":[{"id":"GHSA-rr6q-fmv4-p23m","title":"Affected versions of MISP do not consistently apply the existing authentication-failure logging...","description":"Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.\n\n\nTwo API authentication failure branches wrote directly to the Log model:\n\n - API requests with no authentication key;\n - requests supplying an API key with an incorrect length\n\n\n\n\nUnlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T12:31:47Z","modified":"2026-09-15T12:31:54Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:11:54.134441Z"}],"nvd":[{"id":"CVE-2026-92003","description":"Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.\n\n\nTwo API authentication failure branches wrote directly to the Log model:\n\n - API requests with no authentication key;\n - requests supplying an API key with an incorrect length\n\n\n\n\nUnlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T12:17:55.757Z","modified":"2026-09-16T13:42:48.523Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:12:47.668237Z"}],"osv":[{"id":"CVE-2026-92003","title":"MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion","description":"Affected versions of MISP do not consistently apply the existing authentication-failure logging throttle.\n\n\nTwo API authentication failure branches wrote directly to the Log model:\n\n - API requests with no authentication key;\n - requests supplying an API key with an incorrect length\n\n\n\n\nUnlike other authentication failures, these paths bypassed _shouldLog(), so every request could create another durable auth_fail entry.\n\nVersion affected: ≤2.5.45","status":"published","published":"2026-09-15T11:43:19.403Z","modified":"2026-10-28T02:31:10.580003907Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T15:45:20.269367Z"}]}}