MEDIUM 6.3 NVD
CVE-2026-114118
Vyper 0.3.4 through 0.5.0b1 computes the remaining blueprint size in create_from_blueprint by uint256 subtraction without first checking that code_offset is bel
Vyper 0.3.4 through 0.5.0b1 computes the remaining blueprint size in create_from_blueprint by uint256 subtraction without first checking that code_offset is below the blueprint's code size, so a huge offset wraps to a small positive value. An attacker controlling code_offset can make a factory deploy contracts with no runtime code, potentially trapping ETH and tokens.
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-fxg7-4wqg-c8gh
- https://www.vulncheck.com/advisories/vyper-0.3.4-through-0.5-0b1-create-from-blueprint-off
This medium severity vulnerability with a CVSS score of 6.3 was published on 2026-10-21 via NVD.
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