Use-after-free in jq - #VU126893
Published: April 23, 2026
Vulnerability identifier: #VU126893
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: stedolan (Stephen Dolan)
Affected software:
jq
jq
Detailed vulnerability description
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to use-after-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 2 or more named argument entries to execute arbitrary code.
The standard jq CLI binary is not affected because it passes an object rather than an array to args2obj().
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.