Uncontrolled Recursion in jq - CVE-2026-43896

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

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.

jq
Debian Linux
openEuler
Anolis OS
Fedora
LANTIME Operating System Firmware (LTOS)
jq (Debian package)
jq-help
jq-devel
jq-debugsource
jq-debuginfo
jq
jq-doc

Install update from vendor's website.

jq - update to 1.8.2
LANTIME Operating System Firmware (LTOS) - update to 7.10.013
jq (Debian package) - update to 1.7.1-6+deb13u3
jq-help - update to 1.8.0-4
jq-devel - update to 1.8.0-4
jq-debugsource - update to 1.8.0-4
jq-debuginfo - update to 1.8.0-4
jq - update to 1.8.0-4
jq - update to 1.8.1-8
jq-doc - update to 1.8.1-8
jq-devel - update to 1.8.1-8
jq - update to 1.8.2-4.fc45

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

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

• Denial of service in jq
• Anolis OS update for jq
• Multiple vulnerabilities in Meinberg LANTIME firmware
• Debian update for jq
• Fedora 45 update for jq
• openEuler 24.03 LTS SP3 update for jq
• openEuler 24.03 LTS update for jq
• openEuler 22.03 LTS SP4 update for jq
• openEuler 20.03 LTS SP4 update for jq
• openEuler 24.03 LTS SP1 update for jq