Security Advisory

CVE-2021-29921

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-05-06 00:00:00

Last updated 2025-11-03 21:44:43

Assigner mitre

State PUBLISHED

Description

In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an IP address string. This (in some situations) allows attackers to bypass access control that is based on IP addresses.

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