GitHub Advisoryadvisory · npm
GHSA-6xv4-9cqp-92rh messageformat prototype pollution vulnerability
MEDIUM
Official page ↗
- Aliases
- CVE-2025-57353
- Ecosystem
- npm
- Packages
- @messageformat/runtime
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-1321
- Reviewed
- 2025-09-24
Affected packages
• npm @messageformat/runtime: >= 3.0.1, < 3.0.2 → fixed in 3.0.2
Description
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.
Related
Alias · CVE (1)
- CVE-2025-57353 The Runtime components of messageformat package for Node.js before 3.0.2 contain a prototype pollution vulnerability. vulnerability
Weakness · CWE (1)
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-57353 advisory
- https://github.com/messageformat/messageformat/issues/453 web
- https://github.com/messageformat/messageformat/issues/453#issuecomment-3466959449 web
- https://github.com/messageformat/messageformat/pull/464 web
- https://github.com/messageformat/messageformat/commit/82cd10b40e3f922f990bbcf88a6d14b70c0a3ce0 web
- https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57353 web
- https://github.com/messageformat/messageformat package