GHSA-7524-3396-fqv3
tarteaucitron.js allows UI manipulation via unrestricted CSS injection
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | tarteaucitronjs | < 1.20.1 | 1.20.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
A vulnerability was identified in `tarteaucitron.js`, where user-controlled inputs for element dimensions (`width` and `height`) were not properly validated. This allowed an attacker with direct access to the site's source code or a CMS plugin to set values like `100%;height:100%;position:fixed;`, potentially covering the entire viewport and facilitating clickjacking attacks.
## Impact
An attacker with high privileges could exploit this vulnerability to:
- Overlay malicious UI elements on top of legitimate content,
- Trick users into interacting with hidden elements (clickjacking),
- Disrupt the intended functionality and accessibility of the website.
## Fix https://github.com/AmauriC/tarteaucitron.js/commit/25fcf828aaa55306ddc09cfbac9a6f8f126e2d07
The issue was resolved by enforcing strict validation and sanitization of user-provided CSS values to prevent unintended UI manipulation.
References
External links from the advisory. They lead to third-party sites.