CVE-2026-86547 - mrubyc through 4.0.0 NULL Pointer Dereference via OP_ENTER

CVE-2026-86547 - mrubyc through 4.0.0 NULL Pointer Dereference via OP_ENTER

https://cvefeed.io/rssfeed/latest.atom / Wed, 09/09/2026 - 13:31
CVE ID :CVE-2026-86547
Published : Sept. 9, 2026, 10:22 a.m. | 43 minutes ago
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.
Severity: 6.9 | MEDIUM
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