{"cve":"CVE-2021-3693","nvd":{"published":"2021-08-23T13:15:07.720","modified":"2026-06-17T04:05:34.427","status":"Modified","description":"LedgerSMB does not check the origin of HTML fragments merged into the browser's DOM. By sending a specially crafted URL to an authenticated user, this flaw can be abused for remote code execution and information disclosure.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","score":9.6},"cwes":["CWE-79"],"references":["https://huntr.dev/bounties/daf1384d-648a-43fd-9b35-5c37d8ead667","https://ledgersmb.org/cve-2021-3693-cross-site-scripting","https://www.debian.org/security/2021/dsa-4962","https://huntr.dev/bounties/daf1384d-648a-43fd-9b35-5c37d8ead667","https://ledgersmb.org/cve-2021-3693-cross-site-scripting"],"products":["debian:debian_linux","ledgersmb:ledgersmb"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-3693","score":0.0317,"percentile":0.88025,"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."]}