Skip to content
CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-86547

mrubyc through 4.0.0 NULL Pointer Dereference via OP_ENTER

Description

mrubyc through 4.0.0 contains a null pointer dereference vulnerability in the op_enter() handler in src/vm.c when processing untrusted bytecode. Attackers can craft malicious .mrb bytecode files with OP_ENTER instructions at the top level to crash the embedding application and cause denial of service.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

mrubyc mrubyc

Default version status: unaffected

  • 2.0 to ≤ 4.0.0affected
pkg:github/mrubyc/mrubyc

References