{"cve":"CVE-2026-73649","nvd":{"published":"2026-08-13T18:18:20.793","modified":"2026-10-24T15:10:00.190","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-94"],"references":["https://github.com/shepherdwind/velocity.js/commit/f8e47a6c4607249b9c967d3a1ced959b4dd64dba","https://github.com/shepherdwind/velocity.js/pull/192","https://github.com/shepherdwind/velocity.js/releases/tag/v2.1.7","https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3","https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:35.584907681+00:00"},"epss":{"cve":"CVE-2026-73649","score":0.00726,"percentile":0.53817,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-7gfh-x38p-prh3","url":"https://osv.dev/vulnerability/GHSA-7gfh-x38p-prh3","summary":"Velocity.js: Remote Code Execution via property-read to Function constructor (bypass of GHSA-j658-c2gf-x6pq fix)","modified":"2026-08-13T18:51:15.840308Z","packages":[{"ecosystem":"npm","name":"velocityjs","purl":"pkg:npm/velocityjs","ranges":["<2.1.7"],"fixed":["2.1.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}