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CVE-2026-43896

jq: Stack Overflow in Recursive Object Merge

Published: 5/11/2026 Last updated: 5/12/2026 Reserved: 5/4/2026

jq is a command-line JSON processor. In 1.8.1 and earlier, unbounded recursion in jv_object_merge_recursive() allows a crafted jq program to crash the process with a segfault. The function is reachable through the * operator when both operands are objects.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 6.2 Medium CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Opam packages affected (2)

conf-jq travis-opam

Products affected (2)

Product Vendor Version
jq jqlang (Server Core installation)
jq jqlang n/a

References (4)