# CVE-2026-47761: Tiny Technologies TinyMCE stored XSS in media plugin

Source: https://junglewise.ai/threats/cve-2026-47761-tiny-technologies-tinymce-stored-xss-in-media-plugin  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-28. Updated: 2026-06-05  
License: CC BY 4.0 with a link back

CVE-2026-47761 · Severity: high · CVSS 8.7 · Published 2026-05-28

TinyMCE, a widely used rich text editor for web applications, contains a vulnerability in its media plugin. An attacker can embed malicious scripts into content that, when viewed by other users, could allow the attacker to steal sensitive information or perform actions on the user's behalf. This affects any application using TinyMCE with the media plugin enabled.

Technologies: [tinymce (npm)](https://junglewise.ai/threats/technologies/tinymce), [TinyMCE (NuGet)](https://junglewise.ai/threats/technologies/nuget-tinymce), [tinymce/tinymce (Packagist)](https://junglewise.ai/threats/technologies/tinymce-tinymce). Vendors: [npm](https://junglewise.ai/threats/vendors/npm), [NuGet](https://junglewise.ai/threats/vendors/nuget), [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-47761 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47761 being exploited in the wild.

**How severe is CVE-2026-47761?** High severity, with a CVSS score of 8.7, published 28 May 2026.

**Which products and versions are affected?** tinymce (npm) SEMVER:introduced=0,last_affected=5.10.9; TinyMCE (NuGet) ECOSYSTEM:introduced=0,last_affected=5.10.9; tinymce/tinymce (Packagist) ECOSYSTEM:introduced=0,last_affected=5.10.9.

**Is there a fix for CVE-2026-47761?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-47761 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-47761?** Check whether you run tinymce (npm), TinyMCE (NuGet) or tinymce/tinymce (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stored cross-site scripting (XSS) vulnerability exists in the TinyMCE media plugin. The root cause is the improper neutralization of user-controllable input within 'data-mce-object' and 'data-mce-p-*' attributes. An attacker with low privileges can inject malicious scripts via these crafted attributes, which are then executed in the context of the victim's browser when the content is rendered. The vulnerability has been patched in versions 8.5.1, 7.9.3, and 5.11.1 LTS by implementing proper sanitization for these specific attributes.

## Affected products

- TinyMCE tinymce < 5.11.1, >= 6.0.0, < 7.9.3, >= 8.0.0, < 8.5.1

## Identifiers

- CVE-2026-47761
- GHSA-vg35-5wq7-3x7w

## Timeline

- 2026-05-20: disclosed
- 2026-05-28: advisory: NVD publication date
- 2026-06-05: advisory: GitHub Advisory reviewed

## References

- [https://api.github.com/users/UncleJ4ck](https://api.github.com/users/UncleJ4ck)
- [https://github.com/UncleJ4ck](https://github.com/UncleJ4ck)
- [https://api.github.com/users/UncleJ4ck/gists%7B/gist_id%7D](https://api.github.com/users/UncleJ4ck/gists%7B/gist_id%7D)
- [https://api.github.com/users/UncleJ4ck/repos](https://api.github.com/users/UncleJ4ck/repos)
- [https://avatars.githubusercontent.com/u/52085661?v=4](https://avatars.githubusercontent.com/u/52085661?v=4)
- [https://api.github.com/users/UncleJ4ck/events%7B/privacy%7D](https://api.github.com/users/UncleJ4ck/events%7B/privacy%7D)

## Related threats

- [TinyMCE media plugin stored cross-site scripting](https://junglewise.ai/threats/cve-2026-116675-tinymce-is-an-open-source-rich-text-editor-from-7-9-3-until-7-9)
- [PYSEC-2026-1301 - TinyMCE Cross-Site Scripting (XSS) vulnerability using noneditable_regexp option](https://junglewise.ai/threats/cve-2024-38356-tinymce-cross-site-scripting-in-noneditable-regexp)
- [PYSEC-2026-1302 - TinyMCE Cross-Site Scripting (XSS) vulnerability using noscript elements](https://junglewise.ai/threats/cve-2024-38357-tinymce-cross-site-scripting-in-noscript-element-parsing)
- [PYSEC-2026-632 - Cross-site scripting vulnerability in TinyMCE plugins](https://junglewise.ai/threats/cve-2024-21910-tinymce-cross-site-scripting-in-image-and-link-plugins)
- [Tiny Technologies TinyMCE stored XSS via forged mce:protected comments](https://junglewise.ai/threats/cve-2026-47762-tiny-technologies-tinymce-stored-xss-via-forged-mce-protected)