CVE-2026-40612

EUVD-2026-29161
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
GitHub_MCNA
5.4 MEDIUM
LOCAL
LOW
NONE
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
jqlangjq
𝑥
≤ 1.8.1
CNA
Debian logo
Debian Releases
Debian Product
Codename
jq
bookworm
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
vulnerable
sid
vulnerable
trixie
vulnerable
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://github.com/jqlang/jq/security/advisories/GHSA-r7m6-x9c7-h69j
https://github.com/jqlang/jq/security/advisories/GHSA-r7m6-x9c7-h69j