CVE-2026-114118

EUVD-2026-106921
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
4.8 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 9.44%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
vyperlangvyper
0.3.4 ≤
𝑥
≤ 0.5.0b1
CNA
Common Weakness Enumeration
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-offset-validation-bypass-via-unsigned-wraparound