{"cve":"CVE-2021-43977","nvd":{"published":"2021-11-17T17:15:08.583","modified":"2026-06-17T04:11:43.727","status":"Modified","description":"SmarterTools SmarterMail 16.x through 100.x before 100.0.7803 allows XSS.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://csirt.divd.nl/cases/DIVD-2021-00006/","https://www.smartertools.com/smartermail/release-notes/current","https://csirt.divd.nl/cases/DIVD-2021-00006/","https://www.smartertools.com/smartermail/release-notes/current"],"products":["smartertools:smartermail"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-43977","score":0.00586,"percentile":0.48053,"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."]}