CVE-2026-44966

FAUCET Score

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.

First published: May 26, 2026Last modified: May 26, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		<= 2.1.5CPE matchmatch criteria	cpe:2.3:a:shepherdwind:velocity.js::::::node.js::*

CVSS Data

CVSS version used by this source: 3.1

8.3HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

3.9

Impact Score

3.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.51%

Probability of exploitation in next 30 days

EPSS Percentile

40.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-25

Model: v2026.06.15

This CVE's current EPSS score of 0.0050 is in the 19th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference

View patch

Vendor Advisories (1)

npmGHSA-j658-c2gf-x6pqhigh

Velocity.js has a Prototype Pollution vulnerability through #set path assignment

May 9, 2026

References

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

ExploitVendor Advisory