QSearchQSearch

CVE-2026-44216

7.5 HIGH

Wasmtime is a runtime for WebAssembly

Published: 2026-05-14 · Last updated: 2026-05-18

Severity and scoring

CVSS
7.5 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-770

Affected products

VendorProduct
bytecodealliancewasmtime

Description

Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on overflow. This overflow is possible to trigger, and thus panic, when a table with an extremely large size is allocated. This is possible with the WebAssembly memory64 proposal where tables can have sizes in the 64-bit range as opposed to the previous 32-bit range which would not overflow. The panic happens when attempting to create a very large table, such as when instantiating a WebAssembly module or component. This vulnerability is fixed in 36.0.8, 43.0.2, and 44.0.1.

Source: NVD

References

Related CVEs

Same CWE

  • CVE-2026-48854 — Allocation of Resources Without Limits or Throttling vulnerability in elixir-grpc grpc allows unauthenticated attackers to exhaust the BE...
  • CVE-2026-48853 — Deserialization of Untrusted Data and Allocation of Resources Without Limits or Throttling vulnerabilities in elixir-grpc grpc allow unau...
  • CVE-2026-8683 — Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App w... (6.5 MEDIUM)
  • CVE-2026-53522 — Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool (6.5 MEDIUM)
  • CVE-2026-50560 — Netty is a network application framework for development of protocol servers and clients (5.3 MEDIUM)