{"cve":"CVE-2018-18898","nvd":{"published":"2019-03-21T16:00:29.873","modified":"2026-06-17T01:48:06.167","status":"Modified","description":"The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.","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://bestpractical.com/download-page","https://lists.debian.org/debian-lts-announce/2020/02/msg00009.html","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CPJVDT77ZPRU5Z2BEMZM7EBY6WZHUATZ/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YR46PPHBEM76DNN4DEQMAYIKLCO3TQU2/","https://usn.ubuntu.com/4517-1/"],"products":["bestpractical:request_tracker","canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2018-18898","score":0.02356,"percentile":0.83747,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}