Double free in jq - #VU126894
Published: April 23, 2026
Vulnerability identifier: #VU126894
CSH Severity: Low
CVSS v4 BT: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: N/A
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to double free in the args2obj() function in src/execute.c when processing array arguments in the public jq_compile_args() API. A local user can supply a crafted array with 1 or more named argument entries to cause a denial of service.
The standard jq CLI binary is not affected because it passes an object rather than an array to args2obj().
Affected software
jq
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.