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CVE-2026-41257 (GCVE-0-2026-41257)

Vulnerability from cvelistv5 – Published: 2026-05-11 17:14 – Updated: 2026-05-11 19:25
VLAI
Title
jq: Signed-int overflow in `stack_reallocate` (jq VM stack)
Summary
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.
Severity
6.4 (Medium)
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-11 19:25 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
  • CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
Vendor Product Version CPE status
jqlang jq Affected: <= 1.8.1
guessed Create a notification for this product.
Show details on NVD website
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