CVE-2021-41122
Bounds check missing for decimal args in Vyper
MEDIUM
4.3
CVSS Score
Published: October 5, 2021 at 11:00 PM UTC
Updated: June 17, 2026 at 04:07 AM UTC
1 product affected across 1 vendorVyper
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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.8%
Description
Vyper is a Pythonic Smart Contract Language for the EVM. In affected versions external functions did not properly validate the bounds of decimal arguments. The can lead to logic errors. This issue has been resolved in version 0.3.0.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Vyper· Vyperlangpypi
95%v < 0.3.0
Affected range stops below 0.3.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (2)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/vyperlang/vyper/pull/2447x_refsource_CONFIRMExploitThird Party Advisory
Source: [email protected]
https://github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46CVSS
4.3MEDIUMGitHub_M
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-682
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