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URL: https://nvd.nist.gov/vuln/detail/CVE-2026-32316

⇱ NVD - CVE-2026-32316

  1. Vulnerabilities

CVE-2026-32316 Detail

Description

jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the jvp_string_append() and jvp_string_copy_replace_bad 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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/jqlang/jq/commit/e47e56d226519635768e6aab2f38f0ab037c09e5 GitHub, Inc. Patch 
https://github.com/jqlang/jq/security/advisories/GHSA-q3h9-m34w-h76f GitHub, Inc. Exploit  Patch  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-122 Heap-based Buffer Overflow GitHub, Inc.  
CWE-190 Integer Overflow or Wraparound GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 6:35:33 AM

Action Type Old Value New Value
Added SSVC 
{"timestamp":"2026-04-13T18:56:45.829031Z","id":"CVE-2026-32316","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by GitHub, Inc. 6/17/2026 6:35:33 AM

Action Type Old Value New Value
Added Affected 
[{"vendor":"jqlang","product":"jq","versions":[{"version":"< e47e56d226519635768e6aab2f38f0ab037c09e5","status":"affected"}]}]

Initial Analysis by NIST 4/22/2026 12:29:09 PM

Action Type Old Value New Value
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added CPE Configuration 
OR
 *cpe:2.3:a:jqlang:jq:*:*:*:*:*:*:*:* versions up to (including) 1.8.1
Added Reference Type 
GitHub, Inc.: https://github.com/jqlang/jq/commit/e47e56d226519635768e6aab2f38f0ab037c09e5 Types: Patch
Added Reference Type 
GitHub, Inc.: https://github.com/jqlang/jq/security/advisories/GHSA-q3h9-m34w-h76f Types: Exploit, Patch, Vendor Advisory

New CVE Received from GitHub, Inc. 4/13/2026 2:16:29 PM

Action Type Old Value New Value
Added Description 
jq is a command-line JSON processor. An integer overflow vulnerability exists through version 1.8.1 within the jvp_string_append() and jvp_string_copy_replace_bad 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.
Added CVSS V3.1 
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Added CWE 
CWE-122
Added CWE 
CWE-190
Added Reference 
https://github.com/jqlang/jq/commit/e47e56d226519635768e6aab2f38f0ab037c09e5
Added Reference 
https://github.com/jqlang/jq/security/advisories/GHSA-q3h9-m34w-h76f

Quick Info

CVE Dictionary Entry:
CVE-2026-32316
NVD Published Date:
04/13/2026
NVD Last Modified:
06/17/2026
Source:
GitHub, Inc.