CVE-2026-44966
Velocity.js is a JavaScript implementation of the Apache Velocity template engine.
Published May 26, 2026 · updated Jul 24, 2026 · shepherdwind velocity.js
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.
Code
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No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 26, 2026 · NIST NVD
Detected
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
Jul 24, 2026 · NIST NVD
Updated
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
Affected
- cpe shepherdwind/velocity.jsversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-44966
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-44966
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
nvd.nist.gov