CVE Catalog

CVE-2021-41164

HighCVSS 8.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
1.26%

67th percentile - higher than 67% of all known CVEs

Summary

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.

Risk Assessment

The vulnerability may allow an attacker to execute malicious JavaScript in the user's browser, potentially leading to data theft or session hijacking.

Recommendation

Update CKEditor 4 to version 4.17.0 or later as soon as it is available. Until then, limit trust in user-provided content.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS