{"cve":"CVE-2021-31405","nvd":{"published":"2021-04-23T16:15:08.687","modified":"2026-06-17T03:51:43.170","status":"Modified","description":"Unsafe validation RegEx in EmailField component in com.vaadin:vaadin-text-field-flow versions 2.0.4 through 2.3.2 (Vaadin 14.0.6 through 14.4.3), and 3.0.0 through 4.0.2 (Vaadin 15.0.0 through 17.0.10) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400"],"references":["https://github.com/vaadin/flow-components/pull/442","https://vaadin.com/security/cve-2021-31405","https://github.com/vaadin/flow-components/pull/442","https://vaadin.com/security/cve-2021-31405"],"products":["vaadin:flow","vaadin:vaadin"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-31405","score":0.01127,"percentile":0.66351,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2wqp-jmcc-mc77","url":"https://osv.dev/vulnerability/GHSA-2wqp-jmcc-mc77","summary":"Regular expression denial of service (ReDoS) in EmailField component in Vaadin 14 and 15-17","modified":"2023-11-08T04:05:48.221232Z","packages":[{"ecosystem":"Maven","name":"com.vaadin:vaadin-bom","purl":"pkg:maven/com.vaadin/vaadin-bom","ranges":[">=14.0.6 <14.4.4"],"fixed":["14.4.4"]},{"ecosystem":"Maven","name":"com.vaadin:vaadin-bom","purl":"pkg:maven/com.vaadin/vaadin-bom","ranges":[">=15.0.0 <17.0.11"],"fixed":["17.0.11"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}