CVE - CVE-2023-45818

CVE-ID
CVE-2023-45818	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/tinymce/tinymce/security/advisories/GHSA-v65r-p3vv-jjfv URL:https://github.com/tinymce/tinymce/security/advisories/GHSA-v65r-p3vv-jjfv MISC:https://researchgate.net/publication/266654651_mXSS_attacks_Attacking_well-secured_web-applications_by_using_innerHTML_mutations URL:https://researchgate.net/publication/266654651_mXSS_attacks_Attacking_well-secured_web-applications_by_using_innerHTML_mutations MISC:https://tiny.cloud/docs/release-notes/release-notes5108/#securityfixes URL:https://tiny.cloud/docs/release-notes/release-notes5108/#securityfixes MISC:https://tiny.cloud/docs/tinymce/6/6.7.1-release-notes/#security-fixes URL:https://tiny.cloud/docs/tinymce/6/6.7.1-release-notes/#security-fixes MISC:https://www.tiny.cloud/docs/api/tinymce.html/tinymce.html.saxparser/ URL:https://www.tiny.cloud/docs/api/tinymce.html/tinymce.html.saxparser/
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20231013	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20231013)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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