CVE-2026-44966

HIGH

Velocity.js: Prototype Pollution in #set path assignment

Title source: cna
STIX 2.1

Description

Velocity.js is a JavaScript implementation of the Apache Velocity template engine. In 2.1.5 and earlier, a prototype pollution vulnerability was discovered in velocityjs. This issue occurs during the processing of #set directives in Velocity templates. If an application renders a template controlled by an attacker, it is possible to modify Object.prototype, potentially leading to Denial of Service (DoS) or Remote Code Execution (RCE) depending on the server environment.

References (1)

Core 1
Core References

Scores

CVSS v3 8.3
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Details

CWE
CWE-1321
Status published
Products (1)
shepherdwind/velocity.js <= 2.1.5
Published May 26, 2026
Tracked Since May 27, 2026