CVE-2026-44966

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.

PUBLISHED Reserved 2026-05-08 | Published 2026-05-26 | Updated 2026-06-01 | Assigner GitHub_M

Problem types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Product status

References

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

cve.org (CVE-2026-44966)

nvd.nist.gov (CVE-2026-44966)

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