CVE-2025-57353
messageformat prototype pollution vulnerability
Impact
The Runtime components of messageformat package for Node.js version 3.0.1 contain a prototype pollution vulnerability. Due to insufficient validation of nested message keys during the processing of message data, an attacker can manipulate the prototype chain of JavaScript objects by providing specially crafted input. This can result in the injection of arbitrary properties into the Object.prototype, potentially leading to denial of service conditions or unexpected application behavior. The vulnerability allows attackers to alter the prototype of base objects, impacting all subsequent object instances throughout the application's lifecycle. Version 3.0.2 contains a fix.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @messageformat/runtime | = 3.0.1 | 3.0.2 |
Affected products
| Product | Affected versions |
|---|---|
| Messageformat Package For Node.Js | before 3.0.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57353
- https://github.com/messageformat/messageformat/commit/82cd10b40e3f922f990bbcf88a6d14b70c0a3ce0
- https://github.com/messageformat/messageformat/issues/453
- https://github.com/messageformat/messageformat/issues/453#issuecomment-3466959449
- https://github.com/messageformat/messageformat/pull/464
- https://github.com/advisories/GHSA-6xv4-9cqp-92rh
- https://nvd.nist.gov/vuln/detail/CVE-2025-57353