CVE-2026-115392: 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…

PriorityP341high7.9CVSS 3.1

AVNACHPRLUIRSCCHIHAL

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
bytecodealliance	wasmtime	< 24.0.13	24.0.13
bytecodealliance	wasmtime	>= 25.0.0 < 36.0.14	36.0.14
bytecodealliance	wasmtime	>= 37.0.0 < 46.0.3	46.0.3
bytecodealliance	wasmtime	>= 47.0.0 < 47.0.4	47.0.4

CVSS provenance

nvdv3.17.9HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L

nvdv4.08.8HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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