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CVE-2026-86547

mrubyc through 4.0.0 NULL Pointer Dereference via OP_ENTER PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
mrubyc / mrubycaffected 2.0 through 4.0.0

CWE

CWE-476

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.