CVE-2024-21911: tinymce XSS — Exploit

Description

TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.

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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)

Affected Products

Vendor	Product	Versions
tiny	tinymce	< 5.6.0

References

Exploits

https://github.com/advisories/GHSA-w7jx-j77m-wp65 https://github.com/tinymce/tinymce/security/advisories/GHSA-w7jx-j77m-wp65 https://github.com/advisories/GHSA-w7jx-j77m-wp65 https://github.com/tinymce/tinymce/security/advisories/GHSA-w7jx-j77m-wp65

Other References

https://vulncheck.com/advisories/vc-advisory-GHSA-w7jx-j77m-wp65 https://www.npmjs.com/package/tinymce https://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes https://vulncheck.com/advisories/vc-advisory-GHSA-w7jx-j77m-wp65 https://www.npmjs.com/package/tinymce https://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes

Frequently Asked Questions

What is CVE-2024-21911? +

TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-21911? +

CVE-2024-21911 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.

What products are affected by CVE-2024-21911? +

CVE-2024-21911 affects products from tiny, specifically: tinymce. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-21911? +

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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