{"id":"CVE-2020-36320","aliases":["EUVD-2021-0750","GHSA-42j4-733x-5vcf"],"status":"published","title":"Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7","description":"Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email 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Advisory","advisory","web"]},{"url":"https://github.com/vaadin/framework/issues/7757","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/vaadin/framework/pull/12104","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/vaadin/framework/security/advisories/GHSA-42j4-733x-5vcf","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36320","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-42j4-733x-5vcf"}],"sources":{"cve":[{"id":"CVE-2020-36320","title":"Regular expression Denial of Service (ReDoS) in EmailValidator class in Vaadin 7","description":"Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.","status":"published","published":"2021-04-23T16:05:40.779Z","modified":"2024-09-16T16:58:41.413Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2021-0750","description":"Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.","status":"published","published":"2021-04-23T16:05:40Z","modified":"2024-09-16T16:58:41Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:46.200652Z"}],"ghsa":[{"id":"GHSA-42j4-733x-5vcf","title":"Regular expression denial of service (ReDoS) in EmailValidator class in Vaadin 7","description":"Unsafe validation RegEx in `EmailValidator` class in `com.vaadin:vaadin-server` versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.\n\n- https://vaadin.com/security/cve-2020-36320","status":"published","published":"2021-04-19T14:49:32Z","modified":"2024-05-15T06:27:11Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:49.48194Z"}],"nvd":[{"id":"CVE-2020-36320","description":"Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.","status":"published","published":"2021-04-23T16:15:08.36Z","modified":"2026-06-17T03:15:18.03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:06:39.25999Z"}],"osv":[{"id":"CVE-2020-36320","description":"Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email 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