CVE-2024-38357: XSS (CVSS 6.1)

Description

TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content parsing code. This allowed specially crafted noscript elements containing malicious code to be executed when that content was loaded into the editor. This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that content within noscript elements are properly parsed. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/tinymce/tinymce/commit/5acb741665a98e83d62b91713c800abbff43b00d https://github.com/tinymce/tinymce/security/advisories/GHSA-w9jx-4g6g-rp7x https://owasp.org/www-community/attacks/xss https://www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/#overview https://www.tiny.cloud/docs/tinymce/7/7.2-release-notes/#overview https://github.com/tinymce/tinymce/commit/5acb741665a98e83d62b91713c800abbff43b00d https://github.com/tinymce/tinymce/security/advisories/GHSA-w9jx-4g6g-rp7x https://owasp.org/www-community/attacks/xss https://www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/#overview https://www.tiny.cloud/docs/tinymce/7/7.2-release-notes/#overview

Frequently Asked Questions

What is CVE-2024-38357? +

TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content parsing code. This allowed specially crafted noscript elements containing malicious code to be executed when that content was loaded into the editor. This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that content within noscript elements are properly parsed. Users are advised to upgrade. There are no known workarounds for this vulnerability. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-38357? +

CVE-2024-38357 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-38357? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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