CVE-2026-119134

MEDIUM Status: Deferred

CVSS Scores

CVSS v3.x Base Score
6.2
MEDIUM

Description

Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 caps component-model resource handle tables only per component instance and does not charge handle allocations to any ResourceLimiter or StoreLimits. A malicious guest can repeatedly call resource.new and instantiate sub-components to exceed the per-instance cap many times over, causing unbounded host memory growth.

Published
October 29, 2026 4:18 PM
Last Modified
October 29, 2026 4:18 PM
Source
[email protected]

Weaknesses (CWE)

CWE-770

References

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