CVE intelligence and bounded remediation

CVE-2023-30543 — @web3-react is a framework for building Ethereum Apps

Medium CVSS 5.7

@web3-react is a framework for building Ethereum Apps . In affected versions the `chainId` may be outdated if the user changes chains as part of the connection flow. This means that the value of `chainId` returned by `useWeb3React()` may be incorrect. In an application, this means that any data derived from `chainId` could be incorrect. For example, if a swapping application derives a wrapped token contract address from the `chainId` *and* a user has changed chains as part of their connection flow the application could cause the user to send funds to the incorrect address when wrapping. This issue has been addressed in PR #749 and is available in updated npm artifacts. There are no known workarounds for this issue. Users are advised to upgrade.

Severity
Medium
CVSS
5.7 (3.1)
Published
2023-04-17
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-362

Affected products

  • uniswap / web3-react_coinbase-wallet
  • uniswap / web3-react_coinbase-wallet / 7.0.0
  • uniswap / web3-react_coinbase-wallet / 7.0.1
  • uniswap / web3-react_coinbase-wallet / 7.0.2
  • uniswap / web3-react_coinbase-wallet / 8.0.22
  • uniswap / web3-react_coinbase-wallet / 8.0.23

Showing 6 representative product identities from 120 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Race condition, TOCTOU, and lifecycle synchronization

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map concurrent actors, shared state, lock boundaries, signals, callbacks, retries, and check-then-use sequences in the affected path.
  • Determine whether untrusted users can influence timing, object names, filesystem state, or repeated state transitions.
  • Identify clustered and multi-process behavior that repository-local tests may not represent.

Remediate safely

  • Make the sensitive state transition atomic or protect it with a consistently ordered synchronization primitive.
  • Perform authorization and invariant checks on the same authoritative object and transaction used for the operation.
  • Use unique private resources, safe ownership transfer, and idempotent operations; add deterministic concurrency regression tests.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.