CVE-2026-22864

{"id": "CVE-2026-22864", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-22864", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-01-16T17:15:35.078037Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "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": "denoland", "product": "deno", "versions": [{"status": "affected", "version": "< 2.5.6"}]}]}], "published": "2026-01-15T23:15:51.937", "references": [{"url": "https://github.com/denoland/deno/releases/tag/v2.5.6", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/denoland/deno/security/advisories/GHSA-m3c4-prhw-mrx6", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-77"}]}], "descriptions": [{"lang": "en", "value": "Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.5.6, a prior patch aimed to block spawning Windows batch/shell files by returning an error when a spawned path\u2019s extension matched .bat or .cmd. That check performs a case-sensitive comparison against lowercase literals and therefore can be bypassed when the extension uses alternate casing (for example .BAT, .Bat, etc.). This vulnerability is fixed in 2.5.6."}, {"lang": "es", "value": "Deno es un entorno de ejecuci\u00f3n de JavaScript, TypeScript y WebAssembly. Antes de 2.5.6, un parche anterior ten\u00eda como objetivo bloquear la ejecuci\u00f3n de archivos batch/shell de Windows devolviendo un error cuando la extensi\u00f3n de una ruta ejecutada coincid\u00eda con .bat o .cmd. Esa verificaci\u00f3n realiza una comparaci\u00f3n que distingue entre may\u00fasculas y min\u00fasculas contra literales en min\u00fasculas y por lo tanto puede ser eludida cuando la extensi\u00f3n utiliza un uso de may\u00fasculas y min\u00fasculas alternativo (por ejemplo, .BAT, .Bat, etc.). Esta vulnerabilidad est\u00e1 corregida en 2.5.6."}], "lastModified": "2026-06-17T10:20:31.700", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D302E8AF-7ACC-4470-B0AB-B865727AE026", "versionEndExcluding": "2.5.6"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}