Cross-site scripting vulnerabilities in old version of bundled TinyMCE
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
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
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | silverstripe/admin (Packagist) | before 1.12.7 | 1.12.7 | Patch available | GHSA-wqm8-jx8r-8rcq |
- silverstripe/admin (Packagist) Vendor— Affected before 1.12.7 Fixed in 1.12.7 Patch available GHSA-wqm8-jx8r-8rcq
Remediation
- Fix · GHSA-wqm8-jx8r-8rcq silverstripe/admin (Packagist) Fixed in 1.12.7 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-wqm8-jx8r-8rcq
References
Other 5
- https://github.com/silverstripe/silverstripe-admin/security/advisories/GHSA-wqm8-jx8r-8rcq
- https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/admin/SS-2023-001.yaml
- https://github.com/silverstripe/silverstripe-admin
- https://www.silverstripe.org/download/security-releases/ss-2023-001
- https://www.tiny.cloud/docs/release-notes/release-notes54/#securityfixes
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences