CVE-2023-42441

low-risk
Published 2023-09-18

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). Starting in version 0.2.9 and prior to version 0.3.10, locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime. This issue is fixed in version 0.3.10. As a workaround, ensure the lock name is a non-empty string.

Do I need to act?

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0.15% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Vyperlang

References (6)

Patch https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d...
Issue Tracking https://github.com/vyperlang/vyper/pull/3605
Exploit https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m
Patch https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d...
Issue Tracking https://github.com/vyperlang/vyper/pull/3605
Exploit https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m
27
/ 100
low-risk
Severity 21/34 · High
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal