high8.3
CVE-2026-44966
Velocity.js is a JavaScript implementation of the Apache Velocity template engine.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | velocityjs | <= 2.1.5 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Shepherdwind | Velocity.Js | through 2.1.5 |