What is CVE-2026-43894?

CVE-2026-43894 is a medium-severity vulnerability in Jqlang Jq, classified under Integer Overflow or Wraparound. CVSS score: 6.2/10. Published 2026-05-11.

How severe is CVE-2026-43894?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Integer overflow in Jqlang Jq

CVE-2026-43894

jq is a command-line JSON processor. In 1.8.1 and earlier, when decNumberFromString is given a number literal of INT_MAX-1 (2147483646) digits, the D2U() macro overflows during signed-int arithmetic. The wrapped negative value bypasses the…

Vulnerability class: Integer Overflow

EPSS: 0.000 (3.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Jqlang Jq — versions <= 1.8.1

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

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

Frequently asked questions

What is CVE-2026-43894?: CVE-2026-43894 is a medium-severity vulnerability in Jqlang Jq, classified under Integer Overflow or Wraparound. CVSS score: 6.2/10. Published 2026-05-11.
How severe is CVE-2026-43894?: Medium severity. CVSS v3 base score is 6.2 out of 10.