`chainId` may be outdated if user changes chains as part of connection in @web3-react
Impact
chainId may be outdated if the user changes chains as part of the connection flow.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 is a common approach when using other foundational libraries like ethers, and most users of v8 will want to upgrade past the affected versions.
Patches
Patched in https://github.com/Uniswap/web3-react/pull/749. Users of web3-react@8.0.x-beta.0 should upgrade to at least:
- @web3-react/coinbase-wallet@^8.0.35-beta.0
- @web3-react/eip1193@^8.0.27-beta.0
- @web3-react/metamask@^8.0.30-beta.0
- @web3-react/walletconnect@^8.0.37-beta.0
Workarounds
N/A
References
N/A
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @web3-react/coinbase-wallet | >= 6.0.0, < 8.0.35-beta.0 | 8.0.35-beta.0 |
| npm package | @web3-react/eip1193 | >= 6.0.0, < 8.0.27-beta | 8.0.27-beta |
| npm package | @web3-react/metamask | >= 6.0.0, < 8.0.30-beta.0 | 8.0.30-beta.0 |
| npm package | @web3-react/walletconnect | >= 6.0.0, < 8.0.37-beta.0 | 8.0.37-beta.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:L- Weakness (CWE)
CWE-362- Platform
- npm
- Package
@web3-react/coinbase-wallet, @web3-react/eip1193, @web3-react/metamask- Disclosed
- 18.04.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8pf3-6fgr-3g3g - CC BY 4.0
Vulnerability history: @web3-react/metamask
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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