CVE-2026-119138: bytecodealliance wasmtime: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows pending…

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows pending calls to trigger an assertion failure after a trap poisons the Store. Attackers supplying misbehaving guest code can cause a trap and let earlier calls proceed, crashing embedders...

CVE-2026-119143: bytecodealliance wasmtime: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows guest…

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows guest code to trigger a host panic through out-of-bounds zero-length stream operations. Malicious guests can perform zero-length component model stream reads or writes with unvalidated...

CVE-2026-119131: bytecodealliance wasmtime: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability in wasmtime-wasi-http…

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability in wasmtime-wasi-http that lets guests crash the host by sending long request URLs. Guests can use set-path-with-query with a '?' after byte 65535, overflowing a u16 index in the http crate and...

CVE-2026-119134: bytecodealliance wasmtime: 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…

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...

CVE-2026-119135: bytecodealliance wasmtime: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 panics when the host reads a component model stream as a…

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 panics when the host reads a component model stream as a different Rust item type than it was created with, because the host-to-host read path asserts matching TypeIds instead of returning an error. Guest code can return a host-created...

CVE-2026-119142: bytecodealliance wasmtime: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability where dropping the…

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability where dropping the Future returned by TypedFunc::callasync can panic the host. When the guest task has not started, cleanup code searches only one location for work items and unwraps the resulting...

CVE-2026-119140: bytecodealliance wasmtime: Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows malicious…

Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows malicious components to panic the host via thread.yield in start functions. Attackers can supply a component whose start function calls an async-lowered import then thread.yield, causing ...

CVE-2026-119137: bytecodealliance wasmtime: Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a stack overflow vulnerability that allows guests to…

Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a stack overflow vulnerability that allows guests to crash the host through recursive type drops. Guests can define a long chain of recursive types so that removing the top-level type triggers unbounded recursive drops, exhausting th...

wamr:wamr_fuzz_classic_interp: Heap-buffer-overflow in wasm_loader_prepare_bytecode

Project: https://github.com/bytecodealliance/wasm-micro-runtime.git Detailed Report: https://oss-fuzz.com/testcase?key=4624226721267712 Project: wamr Fuzzing Engine: libFuzzer Fuzz Target: wamrfuzzclassicinterp Job Type: libfuzzerasanwamr Platform Id: linux Crash Type: Heap-buffer-overflow READ 2...

CVE-2024-25431

An issue in bytecodealliance wasm-micro-runtime before v.b3f728c and fixed in commit 06df58f allows a remote attacker to escalate privileges via a crafted file to the checkwasabicompatibility function...

CVE-2024-25431: Out-of-bounds Read

An issue in bytecodealliance wasm-micro-runtime before v.b3f728c and fixed in commit 06df58f allows a remote attacker to escalate privileges via a crafted file to the checkwasabicompatibility function...

CVE-2024-25431

An issue in bytecodealliance wasm-micro-runtime before v.b3f728c and fixed in commit 06df58f allows a remote attacker to escalate privileges via a crafted file to the checkwasabicompatibility function...

CVE-2024-25431

CVE-2024-25431 affects the WebAssembly Micro Runtime (WAMR) from Bytecode Alliance. Pre- v.b3f728c builds are vulnerable to privilege escalation via a crafted file that targets the check_was_abi_compatibility function. The issue is mitigated by the fix introduced in commit 06df58f. Multiple conne...

CVE-2024-25431

An issue in bytecodealliance wasm-micro-runtime before v.b3f728c and fixed in commit 06df58f allows a remote attacker to escalate privileges via a crafted file to the checkwasabicompatibility function...