{"cve":"CVE-2021-3355","nvd":{"published":"2021-02-24T15:15:13.933","modified":"2026-06-17T04:04:59.610","status":"Modified","description":"A stored-self XSS exists in LightCMS v1.3.4, allowing an attacker to execute HTML or JavaScript code in a vulnerable Title field to /admin/SensitiveWords.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["http://packetstormsecurity.com/files/161562/LightCMS-1.3.4-Cross-Site-Scripting.html","https://gist.github.com/Peithon/1c628ded0c4fc96c6331c3cce1d0c69b","https://github.com/eddy8/LightCMS/issues/18","https://www.exploit-db.com/exploits/49598","http://packetstormsecurity.com/files/161562/LightCMS-1.3.4-Cross-Site-Scripting.html"],"products":["lightcms_project:lightcms"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-3355","score":0.0725,"percentile":0.9434,"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."]}