Buffer overflow in Jqlang Jq
CVE-2026-32316
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…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (7.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
Affected products
- Jqlang Jq — versions < e47e56d226519635768e6aab2f38f0ab037c09e5
Weakness classification (CWE)
References
- https://github.com/jqlang/jq/security/advisories/GHSA-q3h9-m34w-h76f (x_refsource_CONFIRM)
- https://github.com/jqlang/jq/commit/e47e56d226519635768e6aab2f38f0ab037c09e5 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-32316?
- CVE-2026-32316 is a high-severity vulnerability in Jqlang Jq, classified under Heap-based Buffer Overflow. CVSS score: 8.2/10. Published 2026-04-13.
- How severe is CVE-2026-32316?
- High severity. CVSS v3 base score is 8.2 out of 10.