Critical (9.8). EPSS 7.3% chance of exploitation in the next 30 days.
Off-by-one error in the tokenadd function in jv_parse.c in jq allows remote attackers to cause a denial of service (crash) via a long JSON-encoded number, which triggers a heap-based buffer overflow.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
7.3% chance of exploitation in the next 30 days; higher than 94% of CVEs (scores of 2026-10-31)