Velocity.js: Prototype Pollution in #set path assignment_CVE-2026-44966

8.3 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

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.

Basic Information

ID CVE-2026-44966

Source GitHub_M

Published May 26, 2026 at 21:21

Affected Product

Vendor shepherdwind

Product velocity.js

Version <= 2.1.5

Affected Versions shepherdwind velocity.js <= 2.1.5

CWE Classification

CWE-1321

References

github.com /shepherdwind/velocity.js/security/advisories/GHSA-j658-c2gf-x6pq

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