CVE-2025-31475
tarteaucitron.js allows prototype pollution via custom text injection
Impact
A vulnerability was identified in `tarteaucitron.js`, where the `addOrUpdate` function, used for applying custom texts, did not properly validate input. This allowed an attacker with direct access to the site's source code or a CMS plugin to manipulate JavaScript object prototypes, leading to potential security risks such as data corruption or unintended code execution. ## Impact An attacker with high privileges could exploit this vulnerability to: - Modify object prototypes, affecting core JavaScript behavior, - Cause application crashes or unexpected behavior, - Potentially introduce further security vulnerabilities depending on the application's architecture. ## Fix https://github.com/AmauriC/tarteaucitron.js/commit/74c354c413ee3f82dff97a15a0a43942887c2b5b The issue was resolved by ensuring that user-controlled inputs cannot modify JavaScript object prototypes.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | tarteaucitronjs | < 1.20.1 | 1.20.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Amauri | Tarteaucitronjs | before 1.20.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/AmauriC/tarteaucitron.js/commit/74c354c413ee3f82dff97a15a0a43942887c2b5b
- https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-4hwx-xcc5-2hfc
- https://github.com/advisories/GHSA-4hwx-xcc5-2hfc
- https://nvd.nist.gov/vuln/detail/CVE-2025-31475