{"cve":"CVE-2021-39344","nvd":{"published":"2021-10-15T13:15:07.950","modified":"2026-06-17T04:03:35.273","status":"Modified","description":"The KJM Admin Notices WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/admin/class-kjm-admin-notices-admin.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.0.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","score":4.8},"cwes":["CWE-79"],"references":["https://github.com/BigTiger2020/word-press/blob/main/KJM%20Admin%20Notices.md","https://plugins.trac.wordpress.org/browser/kjm-admin-notices/trunk/admin/class-kjm-admin-notices-admin.php","https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39344","https://github.com/BigTiger2020/word-press/blob/main/KJM%20Admin%20Notices.md","https://plugins.trac.wordpress.org/browser/kjm-admin-notices/trunk/admin/class-kjm-admin-notices-admin.php"],"products":["kajoom:kjm_admin_notices"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-39344","score":0.01079,"percentile":0.6508,"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."]}