CVE-2026-40612
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductJq
PublishedMay 11, 2026
First seenMay 11, 2026
Weakness typeCWE-674CWE-674
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| jqlang jq | v ≤ 1.8.1 | — |
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