CVE-2025-57353
messageformat prototype pollution vulnerability
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.
How to fix CVE-2025-57353
To remediate CVE-2025-57353, upgrade the affected package to a fixed version below.
- —upgrade to 3.0.2 or later
Is CVE-2025-57353 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 3.0.1, < 3.0.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |