CVE-2024-21910: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
TinyMCE versions before 5.10.0 are affected by a cross-site scripting vulnerability. A remote and unauthenticated attacker could introduce crafted image or link URLs that would result in the execution of arbitrary JavaScript in an editing user's browser.
AI Analysis
Technical Summary
CVE-2024-21910 is a cross-site scripting vulnerability affecting TinyMCE versions before 5.10.0. The vulnerability arises from improper neutralization of input during web page generation, specifically allowing crafted image or link URLs to execute arbitrary JavaScript in the context of an editing user's browser. This can be exploited remotely without authentication, potentially leading to script execution that compromises user interaction with the editor.
Potential Impact
An attacker can remotely inject malicious JavaScript code via crafted image or link URLs, which executes in the browser of users interacting with the TinyMCE editor. This can lead to partial compromise of confidentiality and integrity of user data within the editor session. The CVSS vector indicates no privileges are required and user interaction is needed, with a scope change and low impact on confidentiality and integrity, and no impact on availability.
Mitigation Recommendations
A fix is available in TinyMCE version 5.10.0 and later. Users should upgrade to version 5.10.0 or newer to remediate this vulnerability. Since this is not a cloud service, remediation depends on applying the update to affected deployments. Patch status is confirmed by the version information provided.
CVE-2024-21910: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Description
TinyMCE versions before 5.10.0 are affected by a cross-site scripting vulnerability. A remote and unauthenticated attacker could introduce crafted image or link URLs that would result in the execution of arbitrary JavaScript in an editing user's browser.
CVSS v3.1
Score 6.1medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-21910 is a cross-site scripting vulnerability affecting TinyMCE versions before 5.10.0. The vulnerability arises from improper neutralization of input during web page generation, specifically allowing crafted image or link URLs to execute arbitrary JavaScript in the context of an editing user's browser. This can be exploited remotely without authentication, potentially leading to script execution that compromises user interaction with the editor.
Potential Impact
An attacker can remotely inject malicious JavaScript code via crafted image or link URLs, which executes in the browser of users interacting with the TinyMCE editor. This can lead to partial compromise of confidentiality and integrity of user data within the editor session. The CVSS vector indicates no privileges are required and user interaction is needed, with a scope change and low impact on confidentiality and integrity, and no impact on availability.
Mitigation Recommendations
A fix is available in TinyMCE version 5.10.0 and later. Users should upgrade to version 5.10.0 or newer to remediate this vulnerability. Since this is not a cloud service, remediation depends on applying the update to affected deployments. Patch status is confirmed by the version information provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2024-01-03T14:21:17.583Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6929c5924121026312b3ca45
Added to database: 11/28/2025, 15:53:54 UTC
Last enriched: 07/15/2026, 09:45:15 UTC
Last updated: 08/23/2026, 10:52:02 UTC
Views: 199
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