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.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 21 Oct 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Vyper 0.3.4 through 0.5.0b1 create_from_blueprint Offset Validation Bypass via Unsigned Wraparound | |
| First Time appeared |
Vyperlang
Vyperlang vyper |
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| Weaknesses | CWE-681 | |
| CPEs | cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vyperlang
Vyperlang vyper |
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| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-21T00:37:15.454Z
Reserved: 2026-10-20T21:48:58.503Z
Link: CVE-2026-114118
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-21T01:17:38.213
Modified: 2026-10-21T01:17:38.213
Link: CVE-2026-114118
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses