CVE-2026-44966
Last modified
CVE-2026-44966 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.51% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Shepherdwind | Velocity.Js | <= 2.1.5 |
References
- https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-j658-c2gf-x6pqExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-44966?
How severe is CVE-2026-44966?
How do I fix CVE-2026-44966?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-44960A stored XSS can be exploited by leveraging the usernames as…0
- CVE-2026-44961The XML‑RPC API addUser method has a validation bypass intro…0
- CVE-2026-44962Plesk contains an XPath injection vulnerability in the APS A…9.9
- CVE-2026-44963A vulnerability allowing remote code execution (RCE) on the …9.4
- CVE-2026-44964In versions of the Datadog Android application prior to v545…6.5
- CVE-2026-44965In versions of the Datadog Android application prior to v545…5.5
- CVE-2026-44967OpenTelemetry-cpp is the C++ implementation of OpenTelemetry…5.3
- CVE-2026-44968dbt-mcp is a Model Context Protocol server for interacting w…6.3
- CVE-2026-44969dbt-mcp is a Model Context Protocol server for interacting w…3.3
- CVE-2026-4497A vulnerability was determined in Totolink WA300 5.2cu.7112_…9.8
- CVE-2026-44970dbt-mcp is a Model Context Protocol server for interacting w…4.3
- CVE-2026-44971GuardDog is a CLI tool to identify malicious PyPI packages. …8.2
Are you affected by CVE-2026-44966?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST