7.2

CVE-2026-40072

Exploit

web3.py affected by SSRF via CCIP Read (EIP-3668) OffchainLookup URL handling

web3.py allows you to interact with the Ethereum blockchain using Python. From 6.0.0b3 to before 7.15.0 and 8.0.0b2, web3.py implements CCIP Read / OffchainLookup (EIP-3668) by performing HTTP requests to URLs supplied by smart contracts in offchain_lookup_payload["urls"]. The implementation uses these contract-supplied URLs directly (after {sender} / {data} template substitution) without any destination validation. CCIP Read is enabled by default (global_ccip_read_enabled = True on all providers), meaning any application using web3.py's .call() method is exposed without explicit opt-in. This results in Server-Side Request Forgery (SSRF) when web3.py is used in backend services, indexers, APIs, or any environment that performs eth_call / .call() against untrusted or user-supplied contract addresses. A malicious contract can force the web3.py process to issue HTTP requests to arbitrary destinations, including internal network services and cloud metadata endpoints. This vulnerability is fixed in 7.15.0 and 8.0.0b2.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Apeworx ≫ Web3.Py SwPlatformpython Version >= 6.1.0 < 7.15.0
Apeworx ≫ Web3.Py Version6.0.0 Update- SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta10 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta11 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta3 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta4 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta5 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta6 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta7 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta8 SwPlatformpython
Apeworx ≫ Web3.Py Version6.0.0 Updatebeta9 SwPlatformpython
Apeworx ≫ Web3.Py Version8.0.0 Updatebeta1 SwPlatformpython
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.133
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.2 3.9 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
security-advisories@github.com 1.7 0 0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-918 Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

https://github.com/ethereum/web3.py/commit/b1c57bb0a124359c9902daaefab4d8af7c3c4c1e
Patch
https://github.com/ethereum/web3.py/security/advisories/GHSA-5hr4-253g-cpx2
Vendor Advisory
Exploit
Mitigation