What is CVE-2026-44216?

CVE-2026-44216 is a high-severity vulnerability in Bytecodealliance Wasmtime, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-14.

How severe is CVE-2026-44216?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Bytecodealliance Wasmtime

CVE-2026-44216

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 p…

EPSS: 0.000 (15.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Bytecodealliance Wasmtime — versions >= 30.0.0, < 36.0.8, >= 37.0.0, < 43.0.2, 44.0.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44216?: CVE-2026-44216 is a high-severity vulnerability in Bytecodealliance Wasmtime, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-14.
How severe is CVE-2026-44216?: High severity. CVSS v3 base score is 7.5 out of 10.