CVE-2026-41257
MEDIUM5.5CVSS v3
—CVSS v2
0.01%
EPSS (exploit probability)
CWE-190CWE
Description
jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM's data stack tracks its allocation size in a signed int. When the stack grows beyond ≈1 GiB (via deeply nested generator forks), the doubling arithmetic overflows. The wrapped value is passed to realloc and then used for a memmove with attacker-influenced offsets.
CVSS v3 vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected routers (0)
No routers currently mapped to this CVE in our database.