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.
CVE-2024-24815
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EG Risk
- —
- EPSS
- 49.5%
- KEV
- Not listed
Published
February 7, 2024
Last Modified
November 21, 2024
References (12)
- security-advisories@githubhttps://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dtd.html#property-S-cdata
- security-advisories@githubhttps://ckeditor.com/docs/ckeditor4/latest/features/fullpage.html
- security-advisories@githubhttps://ckeditor.com/docs/ckeditor4/latest/guide/dev_advanced_content_filter.html
- security-advisories@githubhttps://github.com/ckeditor/ckeditor4/commit/8ed1a3c93d0ae5f49f4ecff5738ab8a2972194cb
- security-advisories@githubhttps://github.com/ckeditor/ckeditor4/security/advisories/GHSA-fq6h-4g8v-qqvm
- security-advisories@githubhttps://www.drupal.org/sa-contrib-2024-009
- af854a3a-2127-422b-91ae-364da2661108https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_dtd.html#property-S-cdata
- af854a3a-2127-422b-91ae-364da2661108https://ckeditor.com/docs/ckeditor4/latest/features/fullpage.html
- af854a3a-2127-422b-91ae-364da2661108https://ckeditor.com/docs/ckeditor4/latest/guide/dev_advanced_content_filter.html
- af854a3a-2127-422b-91ae-364da2661108https://github.com/ckeditor/ckeditor4/commit/8ed1a3c93d0ae5f49f4ecff5738ab8a2972194cb
- af854a3a-2127-422b-91ae-364da2661108https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-fq6h-4g8v-qqvm
- af854a3a-2127-422b-91ae-364da2661108https://www.drupal.org/sa-contrib-2024-009
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | ckeditor (4.5.7+dfsg-2ubuntu0.16.04.1~esm2) @ xenial | 2026-05-24 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(2 across 2 ecosystems)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| ckeditor4 | — | 4.24.0-lts | — |
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| ckeditor/ckeditor | 4.10.0 ... 4.9.2 (66 versions) | 4.24.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 11× in last 7d / 47× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Frequently asked(5)
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