{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-73649", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-13T14:04:09.604Z", "datePublished": "2026-08-13T18:05:31.929Z", "dateUpdated": "2026-08-14T16:42:31.371Z" }, "containers": { "cna": { "title": "Velocity.js: Remote Code Execution via property-read to Function constructor (bypass of CVE-2026-44966 fix)", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE" } ] } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" } } ], "references": [ { "name": "https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3" }, { "name": "https://github.com/shepherdwind/velocity.js/pull/192", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/shepherdwind/velocity.js/pull/192" }, { "name": "https://github.com/shepherdwind/velocity.js/commit/f8e47a6c4607249b9c967d3a1ced959b4dd64dba", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/shepherdwind/velocity.js/commit/f8e47a6c4607249b9c967d3a1ced959b4dd64dba" }, { "name": "https://github.com/shepherdwind/velocity.js/releases/tag/v2.1.7", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/shepherdwind/velocity.js/releases/tag/v2.1.7" } ], "affected": [ { "vendor": "shepherdwind", "product": "velocity.js", "versions": [ { "version": "< 2.1.7", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-13T18:05:31.929Z" }, "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." } ], "source": { "advisory": "GHSA-7gfh-x38p-prh3", "discovery": "UNKNOWN" } }, "adp": [ { "references": [ { "url": "https://github.com/shepherdwind/velocity.js/security/advisories/GHSA-7gfh-x38p-prh3", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-08-14T16:42:05.530314Z", "id": "CVE-2026-73649", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-14T16:42:31.371Z" } } ] } }