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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-45818 Detail

Description

TinyMCE is an open source rich text editor. A mutation cross-site scripting (mXSS) vulnerability was discovered in TinyMCE’s core undo and redo functionality. When a carefully-crafted HTML snippet passes the XSS sanitisation layer, it is manipulated as a string by internal trimming functions before being stored in the undo stack. If the HTML snippet is restored from the undo stack, the combination of the string manipulation and reparative parsing by either the browser's native [DOMParser API](https://developer.mozilla.org/en-US/docs/Web/API/DOMParser) (TinyMCE 6) or the SaxParser API (TinyMCE 5) mutates the HTML maliciously, allowing an XSS payload to be executed. This vulnerability has been patched in TinyMCE 5.10.8 and TinyMCE 6.7.1 by ensuring HTML is trimmed using node-level manipulation instead of string manipulation. Users are advised to upgrade. There are no known workarounds for this vulnerability.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/tinymce/tinymce/security/advisories/GHSA-v65r-p3vv-jjfv Vendor Advisory 
https://github.com/tinymce/tinymce/security/advisories/GHSA-v65r-p3vv-jjfv Vendor Advisory 
https://researchgate.net/publication/266654651_mXSS_attacks_Attacking_well-secured_web-applications_by_using_innerHTML_mutations Third Party Advisory 
https://researchgate.net/publication/266654651_mXSS_attacks_Attacking_well-secured_web-applications_by_using_innerHTML_mutations Third Party Advisory 
https://tiny.cloud/docs/release-notes/release-notes5108/#securityfixes Release Notes 
https://tiny.cloud/docs/release-notes/release-notes5108/#securityfixes Release Notes 
https://tiny.cloud/docs/tinymce/6/6.7.1-release-notes/#security-fixes Release Notes 
https://tiny.cloud/docs/tinymce/6/6.7.1-release-notes/#security-fixes Release Notes 
https://www.tiny.cloud/docs/api/tinymce.html/tinymce.html.saxparser/ Product 
https://www.tiny.cloud/docs/api/tinymce.html/tinymce.html.saxparser/ Product 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') cwe source acceptance level NIST   GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-45818
NVD Published Date:
10/19/2023
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.