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Fencer Vulns
medium 5.9

CVE-2026-66053 json

Apache Thrift: Python TSSLSocket Hostname Matcher Import

published 2026-07-27 3 mo ago modified 2026-10-24 15 d ago also BIT-thrift-2026-66053 , EUVD-2026-49159 , GHSA-hwrj-9rr4-24xh , PYSEC-2026-3927

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

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

Patch / fix

  • pypi thrift 0.24.0
  • bitnami thrift 0.24.0
  • Apache Software Foundation Apache Thrift 0.24.0
  • thrift Debian 14 0.23.0-3

debian advisories DEBIAN-CVE-2026-66053

  • thrift hummingbird 1 0.24.0-0.1.hum1
  • thrift-qt hummingbird 1 0.24.0-0.1.hum1
  • perl-thrift hummingbird 1 0.24.0-0.1.hum1
  • thrift-glib hummingbird 1 0.24.0-0.1.hum1
  • python3-thrift hummingbird 1 0.24.0-0.1.hum1

red hat advisories RHSA-2026:49837

  • thrift Azure Linux 3.0 0.24.0-1

azure linux advisories AZL-93980

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-66053 updated cvss 5.9

thrift: Apache Thrift Python bindings: Information disclosure due to improper certificate validation

  • Red Hat Enterprise Linux AI (RHEL AI) 3 thrift
    affected: no fix available “Fix deferred”
  • Red Hat Ceph Storage 7 thrift Red Hat Ceph Storage 8 thrift, thrift-qt, perl-thrift, thrift-glib, python3-thrift Red Hat Ceph Storage 9 thrift
    under investigation
  • Red Hat Hardened Images thrift 0.24.0-0.1.hum1, thrift-qt 0.24.0-0.1.hum1, perl-thrift 0.24.0-0.1.hum1, thrift-glib 0.24.0-0.1.hum1, python3-thrift 0.24.0-0.1.hum1
    fixed: vendor fix RHSA-2026:49837

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
pypi thrift
<0.24.0
0.24.0
bitnami thrift
<0.24.0
0.24.0

Affected products

  • Apache Software Foundation Apache Thrift

Classification

Weakness
  • CWE-297 Improper Validation of Certificate with Host Mismatch

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.