Out-of-bounds write or crash when transcoding component model strings

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-394w-hwhg-8vgm For more information see the GitHub-hosted security advisory...

Wasmtime segfault or unused out-of-sandbox load with `f64x2.splat` operator on Cranelift x86-64

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-qqfj-4vcm-26hv For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0093 Heap OOB read in component model UTF-16 to latin1+utf16 string transcoding

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hx6p-xpx3-jvvv For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0092 Panic when transcoding misaligned component model UTF-16 strings

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jxhv-7h78-9775 For more information see the GitHub-hosted security advisory...

Heap OOB read in component model UTF-16 to latin1+utf16 string transcoding

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hx6p-xpx3-jvvv For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0090 Use-after-free bug after cloning `wasmtime::Linker`

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hfr4-7c6c-48w2 For more information see the GitHub-hosted security advisory...

Improperly masked return value from `table.grow` with Winch compiler backend

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-f984-pcp8-v2p7 For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0094 Improperly masked return value from `table.grow` with Winch compiler backend

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-f984-pcp8-v2p7 For more information see the GitHub-hosted security advisory...

Panic when transcoding misaligned component model UTF-16 strings

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jxhv-7h78-9775 For more information see the GitHub-hosted security advisory...

Data leakage between pooling allocator instances

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-6wgr-89rj-399p For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0085 Panic when lifting `flags` component value

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m758-wjhj-p3jq For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0087 Wasmtime segfault or unused out-of-sandbox load with `f64x2.splat` operator on Cranelift x86-64

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-qqfj-4vcm-26hv For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0095 Wasmtime with Winch compiler backend may allow a sandbox-escaping memory access

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xx5w-cvp6-jv83 For more information see the GitHub-hosted security advisory...

Panic when lifting `flags` component value

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m758-wjhj-p3jq For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0091 Out-of-bounds write or crash when transcoding component model strings

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-394w-hwhg-8vgm For more information see the GitHub-hosted security advisory...

RUSTSEC-2026-0096 Miscompiled guest heap access enables sandbox escape on aarch64 Cranelift

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w For more information see the GitHub-hosted security advisory...

Miscompiled guest heap access enables sandbox escape on aarch64 Cranelift

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-jhxm-h53p-jm7w For more information see the GitHub-hosted security advisory...

Host panic when Winch compiler executes `table.fill`

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q49f-xg75-m9xw For more information see the GitHub-hosted security advisory...

wasmtime 缓冲区错误漏洞

Wasmtime is a lightweight WebAssembly runtime open source by the Bytecode Alliance. Versions of Wastime prior to 36.0.7, 42.0.2, and 43.0.1 contained a buffer error vulnerability. This vulnerability stemmed from the pooled allocator using incorrect predicates when resetting virtual memory...

CVE-2026-34945: Incorrect Conversion between Numeric Types

Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Winch compiler contains a bug where a 64-bit table, part of the memory64 proposal of WebAssembly, incorrectly translated the table.size instruction. This bug could lead to disclosing data on the...