CVE-2026-73649

{"id": "CVE-2026-73649", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-73649", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-14T16:42:05.530314Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "shepherdwind", "product": "velocity.js", "versions": [{"status": "affected", "version": "< 2.1.7"}]}]}], "published": "2026-08-13T18:18:20.793", "references": [{"url": "https://github.com/shepherdwind/velocity.js/commit/f8e47a6c4607249b9c967d3a1ced959b4dd64dba", "source": "security-advisories@github.com"}, {"url": "https://github.com/shepherdwind/velocity.js/pull/192", "source": "security-advisories@github.com"}, {"url": "https://github.com/shepherdwind/velocity.js/releases/tag/v2.1.7", "source": "security-advisories@github.com"}, {"url": "https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3", "source": "security-advisories@github.com"}, {"url": "https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-94"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Velocity.js es una implementaci\u00f3n de JavaScript del motor de plantillas Apache Velocity. Antes de la versi\u00f3n 2.1.7, la correcci\u00f3n anterior para CVE-2026-44966 filtraba constructor, __proto__ y prototype solo en el gestor de asignaci\u00f3n #set en src/compile/set.ts, mientras que las expresiones de lectura de propiedades en src/compile/references.ts permanec\u00edan sin filtrar. El flujo de getReferences() llamaba a getAttributes(), cuyo acceso a propiedades permit\u00eda que una plantilla controlada por el atacante atravesara constructor.constructor hasta el constructor de funciones de JavaScript. El gestor #set validaba solo el objetivo de la asignaci\u00f3n y no inspeccionaba la expresi\u00f3n de lectura de propiedades del lado derecho, permitiendo comandos de shell arbitrarios, acceso a variables de entorno, acceso a credenciales de la nube y acceso a la red interna en el proceso del servidor. Este problema est\u00e1 corregido en la versi\u00f3n 2.1.7."}], "lastModified": "2026-10-24T15:10:00.190", "sourceIdentifier": "security-advisories@github.com"}