CVE-2026-54679

jq: potential integer overflow in jvp_string_append

Published: 6/25/2026 Last updated: 6/25/2026 Reserved: 6/15/2026

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.

CNA assigner: GitHub_M (a0819718-46f1-4df5-94e2-005712e83aaa) Requested by: n/a

Metrics

Version	Score	Severity	Vector String
4.0	6.9	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

Opam packages affected (2)

conf-jq travis-opam

Products affected (0)

No product listed.

References (1)

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