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Fencer Vulns
medium 6.1

CVE-2024-24815 json

CKEditor4 Cross-site scripting (XSS) vulnerability caused by incorrect CDATA detection

published 2024-02-07 2 y ago modified 2026-09-10 1 mo ago also GHSA-fq6h-4g8v-qqvm , EUVD-2024-0630

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A cross-site scripting vulnerability has been discovered in the core HTML parsing module in versions of CKEditor4 prior to 4.24.0-lts. It may affect all editor instances that enabled full-page editing mode or enabled CDATA elements in Advanced Content Filtering configuration (defaults to `script` and `style` elements). The vulnerability allows attackers to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse faulty CDATA content detection and use it to prepare an intentional attack on the editor. A fix is available in version 4.24.0-lts.

Patch / fix

  • npm ckeditor4 4.24.0-lts
  • packagist ckeditor/ckeditor 4.24.0
  • ckeditor ckeditor 4.24.0
  • python-django-ckeditor Package Hub 15 SP5, openSUSE Leap 15.5 6.7.2-bp155.3.3.1
  • python-django-ckeditor openSUSE Tumbleweed 6.7.2-1.1

opensuse advisories openSUSE-SU-2025:0008-1openSUSE-SU-2024:14557-1

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-2024-24815 updated cvss 6.1

ckeditor: cross-site scripting vulnerability via incorrect CDATA detection

  • 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 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
GitHub 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
<4.24.0-lts
4.24.0-lts
packagist ckeditor/ckeditor
<4.24.0
4.24.0

Affected products

  • ckeditor ckeditor4

Classification

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

References

Sources

Fencer Vulns 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.