CVE-2026-27204

Katalog CVE

CVSS 6.5 · Medium EPSS 0,67%

Kerentanan Uncontrolled Resource Consumption pada bytecodealliance wasmtime. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of WASI host interfaces are susceptible to guest-controlled resource exhaustion on the host. Wasmtime did not appropriately place limits on resource allocations requested by the guests. This serves as a Denial of Service vector. Wasmtime 24.0.6, 36.0.6, 40.0.4, 41.0.4, and 42.0.0 have all been released with the fix for this issue. These versions do not prevent this issue in their default configuration to avoid breaking preexisting behaviors. All versions of Wasmtime have appropriate knobs to prevent this behavior, and Wasmtime 42.0.0-and-later will have these knobs tuned by default to prevent this issue from happening. There are no known workarounds for this issue without upgrading. Embedders are recommended to upgrade and configure their embeddings as necessary to prevent possibly-malicious guests from triggering this issue.

Rincian

Terbit di NVD

24 Februari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

6.5 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption
CWE-770: Allocation of Resources Without Limits or Throttling
CWE-774: Allocation of File Descriptors or Handles Without Limits or Throttling
CWE-789: Memory Allocation with Excessive Size Value

EPSS (30 hari)

0,67% peluang dieksploitasi; lebih tinggi dari 50,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/bytecodealliance/wasmtime/pull/12599 issue tracking · advisory pihak ketiga
• https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-852m-cvvp-9p4w advisory pihak ketiga
• https://docs.rs/wasmtime-wasi/latest/wasmtime_wasi/struct.WasiCtxBuilder.html#method.max_random_size product
• https://docs.rs/wasmtime/latest/wasmtime/component/struct.ResourceTable.html#method.set_max_capacity product
• https://docs.rs/wasmtime/latest/wasmtime/struct.Store.html#method.set_hostcall_fuel product
• https://docs.wasmtime.dev/security-what-is-considered-a-security-vulnerability.html product
• https://github.com/bytecodealliance/wasmtime/issues/11552 issue tracking