{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44267", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-05T16:33:55.845Z", "datePublished": "2026-11-03T17:52:25.509Z", "dateUpdated": "2026-11-03T17:52:25.509Z"}, "containers": {"cna": {"title": "Elo: Sandbox escape to arbitrary Node.js / browser code execution via unfiltered `.constructor` member access in Elo JavaScript emitter", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-94", "lang": "en", "description": "CWE-94: Improper Control of Generation of Code ('Code Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-693", "lang": "en", "description": "CWE-693: Protection Mechanism Failure", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-1336", "lang": "en", "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine", "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/enspirit/elo/security/advisories/GHSA-33r5-xmm8-v6x5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/enspirit/elo/security/advisories/GHSA-33r5-xmm8-v6x5"}, {"name": "https://github.com/enspirit/elo/commit/2136da1f64eec8ebf99890d3100be9394534b842", "tags": ["x_refsource_MISC"], "url": "https://github.com/enspirit/elo/commit/2136da1f64eec8ebf99890d3100be9394534b842"}, {"name": "https://github.com/enspirit/elo/commit/d2a89a8db76a244eb740687524a7e8529b7554b5", "tags": ["x_refsource_MISC"], "url": "https://github.com/enspirit/elo/commit/d2a89a8db76a244eb740687524a7e8529b7554b5"}], "affected": [{"vendor": "enspirit", "product": "elo", "versions": [{"version": "< 1.0.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-03T17:52:25.509Z"}, "descriptions": [{"lang": "en", "value": "Elo is a purely functional expression language for no-code tools. Prior to 1.0.1, plain Elo strings supplied to defaultFormats.elo.parse(), bin/elo, or elo-lang.org/try can use .constructor.constructor to reach JavaScript Function because the member_access handler in src/transform.ts does not reject meta-properties, src/compilers/javascript.ts emits the surviving property directly, and src/parser.ts accepts constructor as an ordinary identifier. The resulting generated JavaScript executes attacker-selected code in the host runtime. This permits browser script execution and session compromise on the auto-running playground and arbitrary Node.js code execution on library, CI, or DevOps hosts. This plain-string path is distinct from the programmatic AST-object injection issue. This issue is fixed in version 1.0.1."}], "source": {"advisory": "GHSA-33r5-xmm8-v6x5", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "elo", "vendor": "enspirit", "versions": [{"status": "affected", "version": "< 1.0.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Elo is a purely functional expression language for no-code tools. Prior to 1.0.1, plain Elo strings supplied to defaultFormats.elo.parse(), bin/elo, or elo-lang.org/try can use .constructor.constructor to reach JavaScript Function because the member_access handler in src/transform.ts does not reject meta-properties, src/compilers/javascript.ts emits the surviving property directly, and src/parser.ts accepts constructor as an ordinary identifier. The resulting generated JavaScript executes attacker-selected code in the host runtime. This permits browser script execution and session compromise on the auto-running playground and arbitrary Node.js code execution on library, CI, or DevOps hosts. This plain-string path is distinct from the programmatic AST-object injection issue. This issue is fixed in version 1.0.1."}], "id": "CVE-2026-44267", "lastModified": "2026-11-03T18:18:03.130", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-03T18:18:03.130", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/enspirit/elo/commit/2136da1f64eec8ebf99890d3100be9394534b842"}, {"source": "security-advisories@github.com", "url": "https://github.com/enspirit/elo/commit/d2a89a8db76a244eb740687524a7e8529b7554b5"}, {"source": "security-advisories@github.com", "url": "https://github.com/enspirit/elo/security/advisories/GHSA-33r5-xmm8-v6x5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-693"}, {"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-11-03T20:15:14.355874+00:00", "updated": "2026-11-03T20:15:14.355881+00:00", "vendors": [], "weaknesses": ["CWE-1336", "CWE-693", "CWE-79", "CWE-94"]}