Main Vulnerability Database Vulnerabilities #VU130232

Uncontrolled Recursion in jq - CVE-2026-43896

Published: May 6, 2026

Vulnerability identifier: #VU130232

CSH Severity: High

CVSS v4: 8.7 [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]

CVE-ID: CVE-2026-43896

CWE-ID: CWE-674

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled recursion in the "jv_object_merge_recursive()" function in src/jv.c. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Affected software

jq
Anolis OS
jq
jq-devel
jq-doc

How to mitigate CVE-2026-43896

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

jq - update to 1.8.1-8
jq-devel - update to 1.8.1-8
jq-doc - update to 1.8.1-8

Links to Public Exploits and PoC-codes

Exploit #12694 - Stack Overflow in Recursive Object Merge (May 6, 2026)

External References

https://github.com/jqlang/jq/security/advisories/GHSA-mg96-6h3q-g846