NULL pointer dereference in jq - CVE-2026-39956
Published: April 13, 2026
Vulnerability identifier: #VU125840
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2026-39956
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: stedolan (Stephen Dolan)
Affected software:
jq
jq
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to jq _strindices missing runtime type checks. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack or gain access to sensitive information.
How to mitigate CVE-2026-39956
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.