CVE-2021-48018
Vyper 0.2.13 before 0.2.15 Storage Corruption via @nonreentrant Decorator
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
Vyper from 0.2.13 before 0.2.15 allocates storage slots for @nonreentrant reentrancy locks at the same locations as contract storage variables. When a function using @nonreentrant is called, setting the lock overwrites the overlapping storage variable, corrupting contract state and breaking the contract's intended logic.
| CWE | CWE-787 |
| Vendor | vyperlang |
| Product | vyper |
| Published | Oct 21, 2026 |
Stay Ahead of the Next One
Get instant alerts for vyperlang vyper
Be the first to know when new high vulnerabilities affecting vyperlang vyper are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
vyperlang / vyper
0.2.13 < 0.2.15
References
Credits
pandadefi charles-cooper iamdefinitelyahuman