Buffer overflow in Jqlang Jq
CVE-2026-49839
jq is a command-line JSON processor. Prior to 1.8.2,` jq --rawfile` can turn a handled oversized-string error into invalid-state reuse and a real heap out-of-bounds write in assertion-disabled builds. When jv_load_file(raw=1) reads an atta…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
Affected products
- Jqlang Jq — versions < 1.8.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-49839?
- CVE-2026-49839 is a high-severity vulnerability in Jqlang Jq, classified under Out-of-bounds Write. CVSS score: 7.1/10. Published 2026-06-25.
- How severe is CVE-2026-49839?
- High severity. CVSS v3 base score is 7.1 out of 10.