CVE-2026-8257

A vulnerability was detected in WebAssembly Binaryen up to 117. This issue affects the function IRBuilder::makeBrOn of the file src/wasm/wasm-ir-builder.cpp of the component BrOn Parser. Performing a manipulation results in reachable assertion. The attack needs to be approached locally. The explo...

NPM: VM2 Has a WASM Sandbox Escape (Node 25 only)

NPM: VM2 Has a WASM Sandbox Escape Node 25 only vulnerability discovered by ? in WordPress Npm vm2 versions 3.10.4...

GHSA-FFH4-J6H5-PG66 VM2 Has a WASM Sandbox Escape

Summary Full sandbox escape with arbitrary code execution. Attacker code inside VM.run obtains host process object and runs host commands with zero host cooperation. Details Confirmed on: vm2 3.10.4, Node.js v25.6.1 x64 Linux Trigger: Attacker-controlled code passed to VM.run Requires: Node.js...

CVE-2026-26956 vm2: WASM Sandbox Escape (Node 25 only)

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5...

CVE-2026-26956 vm2: WASM Sandbox Escape (Node 25 only)

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5...

CLSA-2026-1777543457 webkit2gtk3: Fix of 9 CVEs

Update to 2.50.6 to fix the following vulnerabilities WSA-2026-0001: - CVE-2025-43213: type confusion in JavaScriptCore fixed in 2.50.5 - CVE-2025-43214: out-of-bounds read in WebCore fixed in 2.50.5 - CVE-2025-43457: integer overflow in WebKit canvas rendering fixed in 2.50.6 - CVE-2025-43511:...

GHSA-82J2-J2CH-GFR8 vulnerabilities

Vulnerabilities for packages: zellij, deno, garage, linkerd-extension-init, wasmtime, parseable, nushell, tealdeer, ztunnel, zizmor, cargo-audit, samply, fnm, shadowsocks-rust, uv, lakekeeper, linkerd2-cni-plugin, ntpd-rs, py3-xet-core, kdash, sdp-k8s-injector, berg, mise, buck2, zola, komodo,...

Exploit for CVE-2026-30368

CVE-2026-30368 Proof of concept Introduction CVE-2026-3036...

GHSA-XGP8-3HG3-C2MH vulnerabilities

Vulnerabilities for packages: xh, pixi, rye, sqlx, buck2, atuin, wasm-pack, deno, zola, shadowsocks-rust, sdp-k8s-injector, zizmor, linkerd2-proxy, qdrant, sccache, lychee, tealdeer, kdash, rustup, py3-xet-core, parseable, wasmtime, linkerd2, samply, berg, ntpd-rs, uv, zellij,...

GHSA-965H-392X-2MH5 vulnerabilities

Vulnerabilities for packages: xh, pixi, rye, sqlx, buck2, atuin, wasm-pack, deno, zola, shadowsocks-rust, sdp-k8s-injector, zizmor, linkerd2-proxy, qdrant, sccache, lychee, tealdeer, kdash, rustup, py3-xet-core, parseable, wasmtime, linkerd2, samply, berg, ntpd-rs, uv, zellij,...

GHSA-965H-392X-2MH5 vulnerabilities

Vulnerabilities for packages: zellij, deno, garage, linkerd-extension-init, wasmtime, parseable, tealdeer, ztunnel, zizmor, cargo-audit, samply, fnm, shadowsocks-rust, uv, lakekeeper, linkerd2-cni-plugin, ntpd-rs, py3-xet-core, kdash, sdp-k8s-injector, berg, mise, buck2, zola, komodo, sentry-cli,...

GHSA-XGP8-3HG3-C2MH vulnerabilities

Vulnerabilities for packages: zellij, deno, garage, linkerd-extension-init, wasmtime, parseable, tealdeer, ztunnel, zizmor, cargo-audit, samply, fnm, shadowsocks-rust, uv, lakekeeper, linkerd2-cni-plugin, ntpd-rs, py3-xet-core, kdash, sdp-k8s-injector, berg, mise, buck2, zola, komodo, sentry-cli,...

SUSE CVE-2026-34987

Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime with its Winch baseline non-default compiler backend may allow properly constructed guest Wasm to access host memory outside of its linear-memory sandbox. This vulnerability requires use of the Winch...

Wasmtime with Winch compiler backend on aarch64 may allow a sandbox-escaping memory access

Impact Wasmtime with its Winch baseline non-default compiler backend may allow properly constructed guest Wasm to access host memory outside of its linear-memory sandbox. This vulnerability requires use of the Winch compiler -Ccompiler=winch. By default, Wasmtime uses its Cranelift backend, not...

Wasmtime has host data leakage with 64-bit tables and Winch

Impact 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 host's stack to WebAssembly guests. The host's stack can possibly contain sensitive...

CVE-2026-34987

Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime with its Winch baseline non-default compiler backend may allow properly constructed guest Wasm to access host memory outside of its linear-memory sandbox. This vulnerability requires use of the Winch...

DEBIAN-CVE-2026-34987

Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime with its Winch baseline non-default compiler backend may allow properly constructed guest Wasm to access host memory outside of its linear-memory sandbox. This vulnerability requires use of the Winch...

CVE-2026-34987

Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime with its Winch baseline non-default compiler backend may allow properly constructed guest Wasm to access host memory outside of its linear-memory sandbox. This vulnerability requires use of the Winch...

CVE-2026-34988

Summary: CVE-2026-34988 affects Wasmtime’s pooling allocator. In certain configurations, when embedding allows specific settings, memory contents can leak between linear memories across WebAssembly instances, breaking Wasmtime’s sandbox. The issue stems from incorrect VM-permission reset logic in...

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 a flaw in the Winch compiler backend, which could allow guest Wasm access to host...