What is CVE-2026-54679?

CVE-2026-54679 is a medium-severity vulnerability in Jqlang Jq, classified under Integer Overflow or Wraparound. CVSS score: 5.5/10. Published 2026-06-25.

How severe is CVE-2026-54679?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Integer overflow in Jqlang Jq

CVE-2026-54679

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.

Vulnerability class: Integer Overflow

EPSS: 0.001 (1.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Jqlang Jq — versions < 1.8.2

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-54679?: CVE-2026-54679 is a medium-severity vulnerability in Jqlang Jq, classified under Integer Overflow or Wraparound. CVSS score: 5.5/10. Published 2026-06-25.
How severe is CVE-2026-54679?: Medium severity. CVSS v3 base score is 5.5 out of 10.