CVE-2025-57353
The Runtime components of messageformat package for Node.js before 3.0.2 contain a prototype pollution vulnerability.
Does this matter?
Lower severity and a low EPSS score (0.35%). Track it; it rarely justifies an emergency change on its own.
Description
The Runtime components of messageformat package for Node.js before 3.0.2 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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.35% probability · 28th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.