What is CVE-2026-66053?

CVE-2026-66053 is a medium-severity vulnerability in Apache Thrift, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 5.9/10. Published 2026-07-27.

How severe is CVE-2026-66053?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Apache Thrift

CVE-2026-66053

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 repla…

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Thrift
Apache Software Foundation Thrift — versions 0

Weakness classification (CWE)

CWE-297 — Improper Validation of Certificate with Host Mismatch

References

security@apache.org (vendor-advisory, Release Notes)
security@apache.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-66053?: CVE-2026-66053 is a medium-severity vulnerability in Apache Thrift, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 5.9/10. Published 2026-07-27.
How severe is CVE-2026-66053?: Medium severity. CVSS v3 base score is 5.9 out of 10.