jq: potential integer overflow in jvp_string_append_CVE-2026-54679

6.9 / 10

MEDIUM

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

jq is a command-line JSON processor. Prior to 1.8.2, on 32bit system, jvp_string_append has a chance of integer/multiple overflowing and then causing a massive buffer overrun. This vulnerability is fixed in 1.8.2.

Basic Information

ID CVE-2026-54679

Source GitHub_M

Published Jun 25, 2026 at 17:16

Modified Jun 25, 2026 at 18:09

Affected Product

Vendor jqlang

Product jq

Version < 1.8.2

Affected Versions jqlang jq < 1.8.2

CWE Classification

CWE-190

References

github.com /jqlang/jq/security/advisories/GHSA-29gj-222p-j7vx

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