CVE-2026-66053: Apache Thrift: Python TSSLSocket Hostname Matcher Import

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-27 · updated 2026-10-24
Weakness: CWE-297

Description

Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift Python bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue. This replaces CVE-2026-41603

Affected products

Apache Software Foundation Apache Thrift: before 0.24.0 — fixed in 0.24.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Thrift 0.24.0. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/7v3jhgwfbmhx42424phydlnzb109g8b9
https://lists.apache.org/thread/w4k5dnv1x58knwlhpo9x0or5xh220y65

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