SB2024012109 - XSS in TinyMCE

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2024-21908)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the schema validation logic of the core parser. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://github.com/tinymce/tinymce/security/advisories/GHSA-5h9g-x5rv-25wg
• https://www.tiny.cloud/docs/release-notes/release-notes59/#securityfixes
• https://github.com/advisories/GHSA-5h9g-x5rv-25wg
• https://vulncheck.com/advisories/vc-advisory-GHSA-5h9g-x5rv-25wg