{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-19T14:16:20.099","vulnerabilities":[{"cve":{"id":"CVE-2019-5440","sourceIdentifier":"support@hackerone.com","published":"2019-05-28T19:29:06.190","lastModified":"2026-06-17T02:37:41.660","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Use of cryptographically weak PRNG in the password recovery token generation of Revive Adserver < v4.2.1 causes a potential authentication bypass attack if an attacker exploits the password recovery functionality. In lib/OA/Dal/PasswordRecovery.php, the function generateRecoveryId() generates a password reset token that relies on the PHP uniqid function and consequently depends only on the current server time, which is often visible in an HTTP Date header."},{"lang":"es","value":"El uso de PRNG (Generador de Numeros PseudoRandom) PRNG criptográficamente débil en la generación de token de recuperación de contraseña de Revive Adserver anterior a la versión 4.2.1, provoca un potencial ataque de omisión de autenticación si un atacante explota la funcionalidad de recuperación de contraseña (password recovery)."}],"affected":[{"source":"support@hackerone.com","affectedData":[{"vendor":"Revive","product":"Revive Adserver","versions":[{"version":"Fixed in 4.2.1","status":"affected"}]}]}],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"support@hackerone.com","type":"Secondary","description":[{"lang":"en","value":"CWE-338"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-338"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:revive-adserver:revive_adserver:*:*:*:*:*:*:*:*","versionEndExcluding":"4.2.1","matchCriteriaId":"D7EECFFC-D1A0-42DD-AD60-85A922AA9159"}]}]}],"references":[{"url":"https://hackerone.com/reports/576504","source":"support@hackerone.com","tags":["Exploit","Third Party Advisory"]},{"url":"https://hackerone.com/reports/576504","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"]}]}}]}