UpHeron
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Servers and applications

CVE-2021-33829

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.

Severity
Medium 6.1
Published
9 Jun 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.9.16, 9.0.14, 9.1.9
Sources
NVD

Affected software

SoftwareAffected versions
DrupalServers and applications · cpe:a:drupal:drupal
  • From 8.9.0 before 8.9.16
  • From 9.0.0 before 9.0.14
  • From 9.1.0 before 9.1.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-33829
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-33829