https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T05:19:24.833078+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2023-42441 CVE-2023-42441 — Vyper has incorrect re-entrancy lock when key is empty string 2026-10-06T05:19:24.884098+00:00

Affected: vyperlang vyper

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.

 https://cve.radiocsirt.org/vuln/ghsa-3hg2-r75x-g69m GHSA-3hg2-r75x-g69m — Vyper has incorrect re-entrancy lock when key is empty string 2026-10-06T05:19:24.884190+00:00

Affected: PyPI: vyper

### Impact

Locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime.

```Vyper @nonreentrant("") # unprotected @external def bar(): pass

@nonreentrant("lock") # protected @external def foo(): pass ``` ### Patches

Patched in #3605

### Workarounds

The lock name should be a non-empty string.

### References _Are there any links users can visit to find out more?_