Inefficient Algorithmic Complexity in jq - CVE-2026-40164
Published: April 13, 2026 / Updated: April 13, 2026
Vulnerability identifier: #VU125832
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2026-40164
CWE-ID: CWE-407
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 perform a denial of service (DoS) attack.
The vulnerability exists due to inefficient algorithmic complexity within hardcoded MurmurHash3 seed. A remote attacker can cause a denial of service condition on the target system.
How to mitigate CVE-2026-40164
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.