CVE-2026-32316

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Source
https://cve.org/CVERecord?id=CVE-2026-32316
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32316.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-32316
Aliases
  • GHSA-q3h9-m34w-h76f
Downstream
Related
Published
2026-04-13T17:49:34.095Z
Modified
2026-08-07T11:48:52.977723257Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
jq: Integer overflow in jvp_string_append() allows Heap-based Buffer Overflow
Details

jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the jvpstringappend() and jvpstringcopyreplacebad functions, where concatenating strings with a combined length exceeding 2^31 bytes causes a 32-bit unsigned integer overflow in the buffer allocation size calculation, resulting in a drastically undersized heap buffer. Subsequent memory copy operations then write the full string data into this undersized buffer, causing a heap buffer overflow classified as CWE-190 (Integer Overflow) leading to CWE-122 (Heap-based Buffer Overflow). Any system evaluating untrusted jq queries is affected, as an attacker can crash the process or potentially achieve further exploitation through heap corruption by crafting queries that produce extremely large strings. The root cause is the absence of string size bounds checking, unlike arrays and objects which already have size limits. The issue has been addressed in commit e47e56d226519635768e6aab2f38f0ab037c09e5.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32316.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "e47e56d226519635768e6aab2f38f0ab037c09e5"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cwe_ids": [
        "CWE-122",
        "CWE-190"
    ]
}
References

Affected packages

Git / github.com/jqlang/jq

Affected ranges

Type
GIT
Repo
https://github.com/jqlang/jq
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e47e56d226519635768e6aab2f38f0ab037c09e5
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.8.1"
        }
    ],
    "cpe": "cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.6rc2
jq-1.*
jq-1.0
jq-1.1
jq-1.2
jq-1.3
jq-1.4
jq-1.5rc1
jq-1.5rc2
jq-1.6
jq-1.6rc1
jq-1.7
jq-1.7.1
jq-1.7rc1
jq-1.7rc2
jq-1.8.0
jq-1.8.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32316.json"