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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-115387

Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 Host Panic via WASI Filesystem Timestamp Overflow

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Status
Published
Published
Updated
Assigning organization
VulnCheck

Description

Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 contains a denial of service vulnerability in wasmtime-wasi that allows guest WASI programs to panic the host via overflowing filesystem timestamps. Attackers can pass atim or mtim values whose sub-second field overflows the seconds field to path_filestat_set_times, fd_filestat_set_times, set-times, or set-times-at, crashing the host.

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

  • 0 to < 36.0.16affected
  • 36.0.16unaffected
  • 37.0.0 to < 48.0.3affected
  • 48.0.3unaffected
  • 49.0.0 to < 49.0.1affected
  • 49.0.1unaffected
pkg:cargo/wasmtime-wasi

References