{"apiVersion":"1.0","identifier":"CVE-2026-73649","description":"Velocity.js is a JavaScript implementation of the Apache Velocity template engine. Prior to 2.1.7, the earlier fix for CVE-2026-44966 filtered constructor, __proto__, and prototype only in the #set assignment handler in src/compile/set.ts, while property-read expressions in src/compile/references.ts remained unfiltered. The getReferences() flow called getAttributes(), whose property access allowed an attacker-controlled template to traverse constructor.constructor to the JavaScript Function constructor. The #set handler validated only the assignment target and did not inspect the right-hand property-read expression, allowing arbitrary shell commands, environment-variable access, cloud-credential access, and internal-network access in the server process. This issue is fixed in version 2.1.7.","publishedAt":"2026-08-13T18:18:20","lastModifiedAt":"2026-08-14T17:20:35","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73649","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00501,"riskScore":1.02,"affectedProduct":"velocity.js","affectedVersions":"<2.1.7","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-73649","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-73649","en":"https://www.redsauce.net/en/cves/CVE-2026-73649","fr":"https://www.redsauce.net/fr/cves/CVE-2026-73649","pt":"https://www.redsauce.net/pt/cves/CVE-2026-73649","de":"https://www.redsauce.net/de/cves/CVE-2026-73649","sk":"https://www.redsauce.net/sk/cves/CVE-2026-73649","el":"https://www.redsauce.net/el/cves/CVE-2026-73649"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-73649"}}