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Vulnerability · Published Jun 9, 2021 · Assigned by mitre

CVE-2021-33829

Medium 6.1

In plain English

A medium-severity security flaw in the ckeditor package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.2% (higher than 88% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)3.2%top 11.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack tooling1Nuclei

Official description

A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 4.14.0 through 4.16.x before 4.16.1 allows remote attackers to inject executable JavaScript code through a crafted comment because --!> is mishandled.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12ckeditor4.16.0+dfsg-2DEBIAN-CVE-2021-33829
Debian:12ckeditor3no fix listedDEBIAN-CVE-2021-33829
Packagistdrupal/core9.0.14GHSA-rgx6-rjj4-c388
Packagistdrupal/core8.9.16GHSA-rgx6-rjj4-c388
Packagistdrupal/core9.1.9GHSA-rgx6-rjj4-c388
Packagistdrupal/core7.80GHSA-rgx6-rjj4-c388
Packagistdrupal/core8.9.16, 9.0.14, 9.1.9DRUPAL-CORE-2021-003
Packagistdrupal/drupal8.9.16GHSA-rgx6-rjj4-c388
Packagistdrupal/drupal7.80GHSA-rgx6-rjj4-c388
Packagistdrupal/drupal9.0.14GHSA-rgx6-rjj4-c388
Packagistdrupal/drupal9.1.9GHSA-rgx6-rjj4-c388
npmckeditor44.16.1GHSA-rgx6-rjj4-c388

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References