GitHub Advisoryadvisory · Packagist
GHSA-wqm8-jx8r-8rcq Cross-site scripting vulnerabilities in old version of bundled TinyMCE
MEDIUM
Official page ↗
- Ecosystem
- Packagist
- Packages
- silverstripe/admin
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- Reviewed
- 2023-04-26
Affected packages
• Packagist silverstripe/admin: < 1.12.7 → fixed in 1.12.7
Description
An old version of TinyMCE include an XSS vulnerability, which was patched in a later version. This was described by TinyMCE:
> A cross-site scripting (XSS) vulnerability was discovered in the core parser. The vulnerability allowed arbitrary JavaScript execution when inserting a specially crafted piece of content into the editor via the clipboard or APIs. This impacts all users who are using TinyMCE 4.9.10 or lower and TinyMCE 5.4.0 or lower.
We reviewed the potential impact of this vulnerability within the context of Silverstripe CMS. We concluded this is a medium impact vulnerability given how TinyMCE is used by Silverstripe CMS.
Reported by: Developers at ACC
References
- https://github.com/silverstripe/silverstripe-admin/security/advisories/GHSA-wqm8-jx8r-8rcq web
- https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/admin/SS-2023-001.yaml web
- https://github.com/advisories/GHSA-vrv8-v4w8-f95h advisory
- https://github.com/silverstripe/silverstripe-admin package
- https://www.silverstripe.org/download/security-releases/ss-2023-001 web
- https://www.tiny.cloud/docs/release-notes/release-notes54/#securityfixes web