CVE-2024-29203

TinyMCE Cross-Site Scripting (XSS) vulnerability in handling iframes

Description

TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content insertion code. This allowed `iframe` elements containing malicious code to execute when inserted into the editor. These `iframe` elements are restricted in their permissions by same-origin browser protections, but could still trigger operations such as downloading of malicious assets. This vulnerability is fixed in 6.8.1.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.09%
Affected: tinymce tinymce
Published at:
Updated at:

References

Link Tags
https://github.com/tinymce/tinymce/security/advisories/GHSA-438c-3975-5x3f
https://github.com/tinymce/tinymce/commit/bcdea2ad14e3c2cea40743fb48c63bba067ae6d1
https://www.tiny.cloud/docs/tinymce/6/6.8.1-release-notes/#new-convert_unsafe_embeds-option-that-controls-whether-object-and-embed-elements-will-be-converted-to-more-restrictive-alternatives-namely-img-for-image-mime-types-video-for-video-mime-types-audio-audio-mime-types-or-iframe-for-other-or-unspecified-mime-types
https://www.tiny.cloud/docs/tinymce/7/7.0-release-notes/#sandbox_iframes-editor-option-is-now-defaulted-to-true

Frequently Asked Questions

What is the severity of CVE-2024-29203?
CVE-2024-29203 has been scored as a medium severity vulnerability.
How to fix CVE-2024-29203?
To fix CVE-2024-29203, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-29203 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-29203 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-29203?
CVE-2024-29203 affects tinymce tinymce.
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