cve-2026-40072-ssrf-lab

CVE-2026-40072 SSRF Lab Hands-on local lab to demonstrate CVE-2026-40072 in web3.py, show the SSRF impact in Burp Suite, and verify the official fix. Overview This repository contains a safe, local-only proof of concept for CVE-2026-40072, a Server-Side Request Forgery SSRF issue tied to CCIP Rea...

CVE-2026-111171

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

CVE-2026-111171 Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 CCIP-Read SSRF Bypass

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

CVE-2026-111171

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

CVE-2026-111171 Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 CCIP-Read SSRF Bypass

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

EUVD-2026-102298

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

CVE-2026-111171

The Web3.py library versions 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 are vulnerable to a Server-Side Request Forgery (SSRF) vulnerability. The root cause is that the _check_ip_blocked() function fails to unwrap IPv4-mapped IPv6 addresses during CCIP Read URL validation . An attacker can u...

CVE-2026-111171 Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 CCIP-Read SSRF Bypass

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

CVE-2026-111171: Server-Side Request Forgery (SSRF)

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because checkipblocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA record...

PT-2026-115177

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because check ip blocked does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA...

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

Summaryweb3.py implements CCIP Read / OffchainLookup EIP-3668 by performing HTTP requests to URLs supplied by smart contracts in offchainlookuppayload"urls". The implementation uses these contract-supplied URLs directly after sender / data template substitution without any destination validation:...

PYSEC-2026-3414 web3.py: SSRF via CCIP Read (EIP-3668) OffchainLookup URL handling

Summary web3.py implements CCIP Read / OffchainLookup EIP-3668 by performing HTTP requests to URLs supplied by smart contracts in offchainlookuppayload"urls". The implementation uses these contract-supplied URLs directly after sender / data template substitution without any destination validation...

CVE-2026-40072

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 offchainlookuppayload"urls". The implementation uses these...

Exploit for Server-Side Request Forgery in Apeworx Web3.Py

CVE-2026-40072 SSRF Lab Hands-on local lab to demonstrate CVE...

Server-Side Request Forgery (SSRF)

web3.py is vulnerable to Server-Side Request Forgery SSRF. The vulnerability is due to web3.py directly processing contract-supplied URLs in its CCIP Read/OffchainLookup EIP-3668 implementation without validating the destination, which allows an attacker to craft a malicious smart contract that...

CVE-2026-40072

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 offchainlookuppayload"urls". The implementation uses these...

CVE-2026-40072

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 offchainlookuppayload"urls". The implementation uses these...

CVE-2026-40072

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 offchainlookuppayload"urls". The implementation uses these...

CVE-2026-40072: Server-Side Request Forgery (SSRF)

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 offchainlookuppayload"urls". The implementation uses these...

Server-side Request Forgery (SSRF)

Overview web3 is a web3: A Python library for interacting with Ethereum Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the CCIP Read process. An attacker can cause the application to make arbitrary HTTP requests to internal or external destinations by...