CVE-2026-40612

jq is a command-line JSON processor. In 1.8.1 and earlier, jv_contains recurses into nested arrays/objects with no depth limit. With a sufficiently nested input structure (built programmatically with reduce, since the JSON parser caps at depth 10000), the C stack is exhausted.

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 NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jqlang/jq/security/advisories/GHSA-r7m6-x9c7-h69j	Exploit Mitigation Vendor Advisory
https://github.com/jqlang/jq/security/advisories/GHSA-r7m6-x9c7-h69j	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) jq es un procesador de JSON de línea de comandos. En 1.8.1 y versiones anteriores, jv_contains recurre en arrays/objetos anidados sin límite de profundidad. Con una estructura de entrada suficientemente anidada (construida programáticamente con reduce, ya que el analizador JSON tiene un límite de profundidad de 10000), la pila de C se agota.

Information

Published : 2026-05-11 18:16

Updated : 2026-10-26 18:10

NVD link : CVE-2026-40612

Mitre link : CVE-2026-40612

CVE.ORG link : CVE-2026-40612

JSON object : View

Products Affected

jqlang

jq

CWE

CWE-674

Uncontrolled Recursion

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