CVE-2023-45818
Summary
| CVE | CVE-2023-45818 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2023-10-19 22:15:00 UTC |
| Updated | 2023-10-26 16:32:00 UTC |
| 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. |
Risk And Classification
Problem Types: CWE-79
NVD Known Affected Configurations (CPE 2.3)
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| tinymce.html.SaxParser | Docs | TinyMCE | MISC | www.tiny.cloud | |
| mXSS vulnerability in TinyMCE undo/redo, getContent API, resetContent API, and Autosave plugin · Advisory · tinymce/tinymce · GitHub | MISC | github.com | |
| TinyMCE 6.7.1 | TinyMCE Documentation | MISC | tiny.cloud | |
| Just a moment... | MISC | researchgate.net | |
| TinyMCE 5.10.8 | Docs | TinyMCE | MISC | tiny.cloud | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.