CVE-2026-115392

HighCVSS 7.9/10Last modified Oct 22, 2026

Description

Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem sandbox escape in wasmtime-wasi because its cap-std dependency mishandles symlinks with trailing slashes on macOS and Linux kernels lacking openat2. A guest with write access to any sandboxed directory can read and write any host-accessible file, and read-only guests may read host files via preexisting symlinks.

Metrics

CVSS 3.1 7.9/10CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L

Weakness enumeration

CWE-61

Affected software

Vendor	Product	Versions
bytecodealliance	wasmtime	< 24.0.13; >= 25.0.0, < 36.0.14; >= 37.0.0, < 46.0.3; >= 47.0.0, < 47.0.4

References

Timeline

Published: Oct 22, 2026
Last modified: Oct 22, 2026
NVD status: Deferred

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