web3.py vulnerabilities and fixes

Recent CVEs affecting web3.py, with upgrade or downgrade steps. 1 tracked.

Also searched as: web3 py, web3py.

web3.py has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-04-09. Highest priority: CVE-2026-40072 (score 39/100).

• CVE-2026-40072 HIGH 7.2 UPGRADE web3.py allows you to interact with the Ethereum blockchain using Python

FAQ

How do I fix web3.py vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is web3.py being exploited right now?

None of the tracked web3.py CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which web3.py CVE should I patch first?

CVE-2026-40072 currently ranks highest (39/100): web3.py allows you to interact with the Ethereum blockchain using Python.

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