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Fencer Intel
medium 6.1

CVE-2020-9281 json

CKEditor 4.0 vulnerability in the HTML Data Processor

published 6y ago modified 2mo ago also BIT-drupal-2020-9281 , EUVD-2021-1200 , GHSA-vcjf-mgcg-jxjq

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.3%
EPSS 4.3% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

A cross-site scripting (XSS) vulnerability in the HTML Data Processor for CKEditor 4.0 before 4.14 allows remote attackers to inject arbitrary web script through a crafted "protected" comment (with the cke_protected syntax).

Patch / fix

  • npm ckeditor4 4.14.0
  • bitnami drupal 8.7.12, 8.8.4
  • ckeditor ckeditor 4.14
  • drupal drupal 8.7.12, 8.8.4
  • oracle application_express 20.2
  • oracle jd_edwards_enterpriseone_tools 9.2.5.2
  • oracle siebel_apps_-_customer_order_management 21.0
  • ckeditor Ubuntu 18.04 LTS 4.5.7+dfsg-2ubuntu0.18.04.1
  • ckeditor Ubuntu 20.04 LTS 4.12.1+dfsg-1ubuntu0.1
  • ckeditor Ubuntu Pro 16.04 LTS 4.5.7+dfsg-2ubuntu0.16.04.1~esm1

ubuntu advisories UBUNTU-CVE-2020-9281

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-9281 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-9281 updated cvss 6.1

ckeditor: XSS in the HTML Data Processor allows remote attackers to inject arbitrary web script through a crafted "protected" comment

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.31% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm ckeditor4
<4.14.0
4.14.0
bitnami drupal
>=8.7.0, <8.7.12
>=8.8.0, <8.8.4
8.7.12
8.8.4

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.