VULNERABILITY INTELLIGENCE
CVE-2026-3298
EPSS probability0.39%
CISA KEVNot currently listed
Published2026-04-21
Last modified2026-10-26
Description
The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. Non-Windows platforms are not affected.
Weakness classification
- cna@python.org: CWE-787