Skip to content
CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-115379

Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call

Description

Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a missing GC rooting vulnerability that leaves references live across try_call unrooted when compiling Wasm modules. Attackers can supply Wasm modules whose callee triggers garbage collection, leaving stale or dangling references that cause GC heap corruption or incorrect execution.

Affected products

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

bytecodealliance wasmtime

Default version status: unaffected

  • 47.0.0 to < 48.0.4affected
  • 48.0.4unaffected
  • 49.0.0 to < 49.0.2affected
  • 49.0.2unaffected
pkg:cargo/wasmtime

References