CVE-2026-40612

Name	CVE-2026-40612
Description	jq is a command-line JSON processor. In 1.8.1 and earlier, jv_contains recurses into nested arrays/objects with no depth limit. With a sufficiently nested input structure (built programmatically with reduce, since the JSON parser caps at depth 10000), the C stack is exhausted.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1136445

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
jq (PTS)	bullseye	1.6-2.1	vulnerable
	bullseye (security)	1.6-2.1+deb11u2	vulnerable
	bookworm	1.6-2.1+deb12u1	vulnerable
	trixie	1.7.1-6+deb13u2	vulnerable
	forky, sid	1.8.1-7	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
jq	source	(unstable)	1.8.1-6	unimportant		1136445

https://github.com/jqlang/jq/security/advisories/GHSA-r7m6-x9c7-h69j
Crash in CLI tool, no security impact