jq: Embedded NUL in jq import paths causes local redaction-policy bypass and preserves sensitive fields in published artifacts

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Summary

CVECVE-2026-43895
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-11 18:16:37 UTC
Updated2026-05-11 18:16:37 UTC
Descriptionjq is a command-line JSON processor. In 1.8.1 and earlier, jq accepts embedded NUL bytes in import paths at the jq-language level, but later resolves those paths through C string operations during module and data-file lookup. This creates a mismatch between the logical import string that policy or audit code may validate and the on-disk path that jq actually opens.

Risk And Classification

Primary CVSS: v3.1 4.4 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.000170000 probability, percentile 0.044610000 (date 2026-05-12)

Problem Types: CWE-20 | CWE-158 | CWE-20 CWE-20: Improper Input Validation | CWE-158 CWE-158: Improper Neutralization of Null Byte or NUL Character

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
3.1CNADECLARED4.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Jqlang Jq affected <= 1.8.1 Not specified

References

ReferenceSourceLinkTags
github.com/jqlang/jq/security/advisories/GHSA-7q7g-mrq3-phxr [email protected] github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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