jq: Stack Overflow in Recursive Object Merge_CVE-2026-43896

6.2 / 10

MEDIUM

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

Description

jq is a command-line JSON processor. In 1.8.1 and earlier, unbounded recursion in jv_object_merge_recursive() allows a crafted jq program to crash the process with a segfault. The function is reachable through the * operator when both operands are objects.

Basic Information

ID CVE-2026-43896

Source GitHub_M

Published May 11, 2026 at 17:24

Affected Product

Vendor jqlang

Product jq

Version <= 1.8.1

Affected Versions jqlang jq <= 1.8.1

CWE Classification

CWE-674

References

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

{
    "lastseen": "",
    "description": "jq is a command-line JSON processor. In 1.8.1 and earlier, unbounded recursion in jv_object_merge_recursive() allows a crafted jq program to crash the process with a segfault. The function is reachable through the * operator when both operands are objects.",
    "published": "2026-05-11T17:24:48.149Z",
    "modified": "2026-05-11T17:24:48.149Z",
    "type": "cve",
    "title": "jq: Stack Overflow in Recursive Object Merge",
    "source": "GitHub_M",
    "references": "https://github.com/jqlang/jq/security/advisories/GHSA-mg96-6h3q-g846",
    "id": "CVE-2026-43896",
    "bulletinFamily": "",
    "cwe": [
        "CWE-674"
    ],
    "cvelist": null,
    "sourceData": "jqlang jq <= 1.8.1",
    "sourceHref": "",
    "cvss": {
        "score": 6.2,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "jq",
    "version": "<= 1.8.1",
    "vendor": "jqlang",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}