CVE-2021-48018Vyper 0.2.13 before 0.2.15 Storage Corruption via @nonreentrant Decorator
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EPSS puts the chance of exploitation in the next 30 days at 0.32%, higher than 24% of scored CVEs.
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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.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.32% (percentile 24)
- Assigned by
- VulnCheck
- NVD analysis
- Received
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 21, 2026
Affected products
vyperlang vyper vyperlang:vyper (from the name) | from 0.2.13 before 0.2.15; 0.2.15 not affected | CNA record |
References
- https://github.com/vyperlang/vyper/security/advisories/GHSA-7f92-rr6w-cq64vendor-advisory
- https://www.vulncheck.com/advisories/vyper-0.2.13-before-0.2.15-storage-corruption-via-nonreentrant-decoratorthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.