CVE-2021-41164 Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML

2021-11-1700:00:00

CWE-79

GitHub_M

www.cve.org

8.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L

8 High

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

75.0%

JSON

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.

CNA Affected

[
  {
    "vendor": "ckeditor",
    "product": "ckeditor4",
    "versions": [
      {
        "version": "< 4.17.0",
        "status": "affected"
      }
    ]
  }
]