Cross-Site Scripting Vulnerability in CKEditor 4 by CKSource
CVE-2021-33829

6.1MEDIUM

Key Information:

Vendor

Ckeditor

Status
Ckeditor
Vendor
CVE Published:
9 June 2021

What is CVE-2021-33829?

A vulnerability in the HTML Data Processor of CKEditor 4 allows remote attackers to execute arbitrary JavaScript code via a specially crafted comment. This issue arises from improper handling of the sequence --!>, potentially leading to severe security implications for web applications using affected versions of CKEditor. Users are advised to update to version 4.16.1 or later to mitigate this risk.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

References

https://www.drupal.org/sa-core-2021-003
x_refsource_CONFIRM
https://ckeditor.com/blog/ckeditor-4.16.1-with-accessibil...
x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisoryx_refsource_FEDORA

EPSS Score

47% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.