CVE-2026-41256

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg	Exploit Vendor Advisory
https://github.com/jqlang/jq/security/advisories/GHSA-vf2h-chrj-q3fg	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-11 18:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41256

Mitre link : CVE-2026-41256

CVE.ORG link : CVE-2026-41256

JSON object : View

Products Affected

jqlang

jq

CWE

CWE-158

Improper Neutralization of Null Byte or NUL Character

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