CVE-2026-115389

Published: Ott 22, 2026 Last Modified: Ott 22, 2026
ExploitDB:
Other exploit source:
Google Dorks:
LOW 1,0
Source: [email protected]
Attack Vector: adjacent
Attack Complexity: high
Privileges Required: low
User Interaction: passive
Confidentiality: N/A
Integrity: N/A
Availability: N/A
LOW 2,3
Source: [email protected]
Attack Vector: adjacent_network
Attack Complexity: high
Privileges Required: low
User Interaction: required
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: low

Description

AI Translation Available

Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not adequately account for host allocations when lifting guest values through the dynamically-typed Val API, bypassing the hostcall fuel limit. A malicious WebAssembly guest can return crafted values that allocate at least ~100x more host memory than tracked, causing denial of service.

770

Allocation of Resources Without Limits or Throttling

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
https://github.com/bytecodealliance/wasmtime/security/advis…
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jqpg-j7w6…
https://www.vulncheck.com/advisories/wasmtime-before-36.0.1…
https://www.vulncheck.com/advisories/wasmtime-before-36.0.16-37.0.0-before-48.0…