Medium severity5.5NVD Advisory· Published May 11, 2026· Updated May 13, 2026
CVE-2026-41257
CVE-2026-41257
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- github.com/jqlang/jq/security/advisories/GHSA-4jm8-m363-4539nvdExploitMitigationVendor Advisory
News mentions
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