CVE & CISA-KEV Catalog

CVE-2026-40612

MEDIUM
5.5
CVSS v3
NVD

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.

CWE-674

How to fix

Remediation Available
jqDebian
Fixed in:1.8.1-6CVE-2026-40612
jqRed Hat / RHEL
Fixed in:main@srcRHSA-2026:29986
Fixed in:main@x86_64RHSA-2026:29986
Fixed in:main@aarch64RHSA-2026:29986
jqRocky
Fixed in:main@srcRHSA-2026:29986
Fixed in:main@x86_64RHSA-2026:29986
Fixed in:main@aarch64RHSA-2026:29986

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.16%probability of exploitation in 30 days
6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Exploit1
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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.