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CVE-2023-30543

`chainId` may be outdated if user changes chains as part of connection in @web3-react

MEDIUM
5.7
CVSS Score
Published: April 17, 2023 at 09:02 PM UTC
Updated: June 17, 2026 at 05:54 AM UTC
5 products affected across 1 vendorWeb3-react EIP1193Web3-react WalletconnectWeb3-react Metamask

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

@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 In affected versions the `chainId` may be outdated if the user changes chains as part of the connection flow.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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Web3-react Coinbase Wallet· Uniswapnpm
95%
6.0.0 ≤ v ≤ 6.2.147.0.0 alpha07.0.1 alpha07.0.2 alpha08.0.22 beta08.0.23 beta08.0.24 beta08.0.25 beta08.0.26 beta08.0.27 beta08.0.28 beta08.0.29 beta08.0.30 beta08.0.31 beta08.0.32 beta08.0.33 beta08.0.34 beta0
Web3-react EIP1193· Uniswapnpm
95%
6.0.0 ≤ v ≤ 6.2.147.0.0 alpha07.0.1 alpha07.0.2 alpha08.0.0 beta08.0.1 beta08.0.10 beta08.0.11 beta08.0.12 beta08.0.13 beta08.0.14 beta08.0.15 beta08.0.16 beta08.0.17 beta08.0.18 beta08.0.19 beta08.0.2 beta08.0.20 beta08.0.21 beta08.0.22 beta08.0.23 beta08.0.24 beta08.0.25 beta08.0.26 beta08.0.3 beta08.0.4 beta08.0.5 beta08.0.6 beta08.0.7 beta08.0.8 beta08.0.9 beta0
Web3-react Metamask· Uniswapnpm
95%
6.0.0 ≤ v ≤ 6.2.148.0.0 beta08.0.1 beta08.0.10 beta08.0.11 beta08.0.12 beta08.0.13 beta08.0.14 beta08.0.15 beta08.0.16 beta08.0.17 beta08.0.18 beta08.0.19 beta08.0.2 beta08.0.20 beta08.0.21 beta08.0.22 beta08.0.23 beta08.0.24 beta08.0.25 beta08.0.26 beta08.0.27 beta08.0.28 beta08.0.29 beta08.0.3 beta08.0.4 beta08.0.5 beta08.0.6 beta08.0.7 beta08.0.8 beta08.0.9 beta0
Web3-react Walletconnect· Uniswapnpm
95%
6.0.0 ≤ v ≤ 6.2.147.0.0 alpha07.0.1 alpha07.0.2 alpha08.0.0 beta08.0.1 beta08.0.10 beta08.0.11 beta08.0.12 beta08.0.13 beta08.0.14 beta08.0.15 beta08.0.16 beta08.0.17 beta08.0.18 beta08.0.19 beta08.0.2 beta08.0.20 beta08.0.21 beta08.0.22 beta08.0.23 beta08.0.24 beta08.0.25 beta08.0.26 beta08.0.27 beta08.0.28 beta08.0.29 beta08.0.3 beta08.0.30 beta08.0.31 beta08.0.32 beta08.0.33 beta08.0.34 beta08.0.35 beta08.0.36 beta08.0.4 beta08.0.5 beta08.0.6 beta08.0.7 beta08.0.8 beta08.0.9 beta0
Web3-react· Uniswap
60%
v < 8.0.27-beta.0v < 8.0.30-beta.0v < 8.0.35-beta.0v < 8.0.37-beta.0
Affected range stops below 8.0.27-beta.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.30-beta.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.35-beta.0, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.0.37-beta.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCIssue TrackingPatch
Source: [email protected]
https://github.com/Uniswap/web3-react/pull/749
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/Uniswap/web3-react/security/advisories/GHSA-8pf3-6fgr-3g3g

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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