What’s Vulnerable › Vulnerabilities

CVE-2026-43895: jq: Embedded NUL in jq import paths causes local redaction-policy bypass and preserves sensitive fields in published artifacts

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-11 · updated 2026-10-26
• Weakness: CWE-20

Description

jq 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.

Affected products

• jqlang jq: through 1.8.1

References

• https://github.com/jqlang/jq/security/advisories/GHSA-7q7g-mrq3-phxr
• https://github.com/jqlang/jq/security/advisories/GHSA-7q7g-mrq3-phxr

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