CVE-2021-48018 Vyper - Broken Access Control

Vyper > 0.2.13 < 0.2.15 contains a broken access control caused by storage slot overlap of @nonreentrant locks with contract variables, letting attackers corrupt contract state, exploit requires calling functions with @nonreentrant.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Published
21 October 2026
Updated
21 October 2026
Weakness
CWE-787

Vendor fix

Upgrade to version 0.2.15 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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