CVE•Published 2021-11-17•Modified 2026-08-25•1 article on news•5 live references•NVD data
CVE-2021-41164Ckeditor · Ckeditor
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
EPSS percentile
67
Exploit Prediction Scoring System · top 33% of all CVEs
Weaknesses (CWE)
Description
CKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.
Timeline
Published 2021-11-17
Modified 2026-08-25
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag238 hosts
vuln:CVE-2021-41164Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Ckeditor Ckeditor"All exposed Ckeditor Ckeditor instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Ckeditor"HTTP body or banner mentions "Ckeditor" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2021-41164Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-41164Censys host search filtered to this CVE id.
grep.app
CVE-2021-41164Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-41164GitHub code search for direct mentions.
Google dork
"CVE-2021-41164" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.