DoS vulnerability on `alloy_dyn_abi::TypedData` hashing

An uncaught panic triggered by malformed input to `alloy_dyn_abi::TypedData` could lead to a denial-of-service (DoS) via `eip712_signing_hash()`. Software with high availability requirements such as network services may be particularly impacted. If in use, external auto-restarting mechanisms can partially mitigate the availability issues unless repeated attacks are possible. The vulnerability was patched by adding a check to ensure the element is not empty before accessing its first element; an error is returned if it is empty. The fix is included in version [v1.4.1](https://crates.io/crates/alloy-dyn-abi/1.4.1) and backported to [v0.8.26](https://crates.io/crates/alloy-dyn-abi/0.8.26). There is no known workaround that mitigates the vulnerability. Upgrading to a patched version is the recommended course of action. Reported by [Christian Reitter](https://github.com/cr-tk) & [Zeke Mostov](https://github.com/emostov) from [Turnkey](https://www.turnkey.com/).

Source published

15 Oct 2025 12:00:00 UTC

Source modified

12 Oct 2026 18:00:11 UTC

Observed here

24 Oct 2026 13:19:54 UTC

Source terms

OSV · upstream source license applies

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CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H