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OSV
OSV
•added 2026/08/21 8:43 p.m.•14 views

JLSEC-2026-1365 wasmtime has a panic when allocating a table exceeding the size of the host's address space

Impact 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 ca...

7.5CVSS5.6AI score0.00581EPSS
SaveExploits0References8
Github Security Blog
Github Security Blog
•added 2026/05/07 12:08 a.m.•31 views

wasmtime has a panic when allocating a table exceeding the size of the host's address space

Impact 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 ca...

7.5CVSS6AI score0.00581EPSS
SaveExploits0References4Affected Software1
OSV
OSV
•added 2026/05/07 12:08 a.m.•23 views

GHSA-P8XM-42R7-89XG wasmtime has a panic when allocating a table exceeding the size of the host's address space

Impact 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 ca...

5.9CVSS6AI score0.00581EPSS
SaveExploits0References4
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