{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41256", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-18T14:01:46.801Z", "datePublished": "2026-05-11T17:18:30.975Z", "dateUpdated": "2026-05-11T20:13:15.235Z"}, "containers": {"cna": {"title": "jq: Embedded NUL truncates top-level jq programs loaded with -f", "problemTypes": [{"descriptions": [{"cweId": "CWE-158", "lang": "en", "description": "CWE-158: Improper Neutralization of Null Byte or NUL Character", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg"}], "affected": [{"vendor": "jqlang", "product": "jq", "versions": [{"version": "<= 1.8.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-11T17:18:30.975Z"}, "descriptions": [{"lang": "en", "value": "jq is a command-line JSON processor. In 1.8.1 and earlier, Top-level jq programs loaded from a file with -f are truncated at the first embedded NUL byte on current upstream HEAD. A crafted filter file such as . followed by \\x00 and arbitrary suffix compiles and executes as only the prefix before the NUL. This leaves jq with a post-CVE-2026-33948 prefix/full-buffer mismatch on the compilation path even though the JSON parser path has already been fixed."}], "source": {"advisory": "GHSA-vf2h-chrj-q3fg", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-11T20:12:56.609851Z", "id": "CVE-2026-41256", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-11T20:13:15.235Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "jq is a command-line JSON processor. In 1.8.1 and earlier, Top-level jq programs loaded from a file with -f are truncated at the first embedded NUL byte on current upstream HEAD. A crafted filter file such as . followed by \\x00 and arbitrary suffix compiles and executes as only the prefix before the NUL. This leaves jq with a post-CVE-2026-33948 prefix/full-buffer mismatch on the compilation path even though the JSON parser path has already been fixed."}], "id": "CVE-2026-41256", "lastModified": "2026-05-11T21:19:00.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-11T18:16:33.983", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-158"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.8.1]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "jq", "source": "cna", "vendor": "jqlang"}, "product": "jq", "vendor": "jqlang"}], "created": "2026-05-11T20:00:15.212490+00:00", "updated": "2026-05-11T20:30:15.827033+00:00", "vendors": ["jqlang", "jqlang$PRODUCT$jq"]}