CVE-2026-49839

{"id": "CVE-2026-49839", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49839", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-25T17:55:24.168681Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "jqlang", "product": "jq", "versions": [{"status": "affected", "version": "< 1.8.2"}]}]}], "published": "2026-06-25T18:16:38.917", "references": [{"url": "https://github.com/jqlang/jq/security/advisories/GHSA-cfh2-vwfq-qfmm", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/jqlang/jq/security/advisories/GHSA-cfh2-vwfq-qfmm", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "jq is a command-line JSON processor. Prior to 1.8.2,` jq --rawfile` can turn a handled oversized-string error into invalid-state reuse and a real heap out-of-bounds write in assertion-disabled builds. When jv_load_file(raw=1) reads an attacker-controlled file, it repeatedly appends file chunks to the same jv string accumulator. Once jv_string_append_buf() returns jv_invalid_with_msg(\"String too long\"), the raw-file loop does not stop. If the file contains at least one more byte, the next loop iteration appends a new chunk to an object that is already invalid. With assertions enabled this aborts in jvp_string_ptr(). With assertions disabled, the invalid object is interpreted as a string object and ASan reports heap-buffer-overflow. This vulnerability is fixed in 1.8.2."}, {"lang": "es", "value": "jq es un procesador JSON de l\u00ednea de comandos. Antes de 1.8.2, \u2019jq --rawfile\u2019 puede convertir un error de cadena sobredimensionada manejado en una reutilizaci\u00f3n de estado inv\u00e1lido y una escritura real fuera de l\u00edmites del heap en compilaciones con aserciones deshabilitadas. Cuando jv_load_file(raw=1) lee un archivo controlado por el atacante, a\u00f1ade repetidamente fragmentos de archivo al mismo acumulador de cadenas jv. Una vez que jv_string_append_buf() devuelve jv_invalid_with_msg(\u2019String too long\u2019), el bucle de archivo raw no se detiene. Si el archivo contiene al menos un byte m\u00e1s, la siguiente iteraci\u00f3n del bucle a\u00f1ade un nuevo fragmento a un objeto que ya es inv\u00e1lido. Con las aserciones habilitadas, esto aborta en jvp_string_ptr(). Con las aserciones deshabilitadas, el objeto inv\u00e1lido se interpreta como un objeto de cadena y ASan informa de un desbordamiento de b\u00fafer del heap. Esta vulnerabilidad est\u00e1 corregida en 1.8.2."}], "lastModified": "2026-10-25T22:10:00.150", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "33B35B19-67AD-450E-A887-48A290566047", "versionEndExcluding": "1.8.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}