CVE-2024-24815

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

MEDIUM
6.1
CVSS Score
Published: February 7, 2024 at 03:14 PM UTC
Updated: June 17, 2026 at 07:14 AM UTC
2 products affected across 1 vendorCkeditorCKEDITOR4

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.0 ≤ v < 4.24.0
Affected range stops below 4.24.0, so it looks safe — our inference, not a vendor statement
v < 4.24.0-lts
Affected range stops below 4.24.0-lts, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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