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Highest advisory severityMedium 2 vendors · 2 advisories

CVE-2026-66053

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

CVE-2026-66053: Apache Thrift Python bindings: Information disclosure due to improper certificate validation. Not in the CISA KEV catalog.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-66053 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Medium
CVSS base score
5.9 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (Red Hat)
Weakness
CWE-295
Fixed releases
  • Red Hat: 0.24.0, thrift-main-0.24.0-0.1.hum1, RHSA-2026:49837
Vendor advisories
2 from Apache, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-66053; bulletin-wide values are not repeated here.

Is CVE-2026-66053 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-66053 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-66053?

Upgrade to a fixed release named by the vendor:

  • Red Hat: 0.24.0, thrift-main-0.24.0-0.1.hum1, RHSA-2026:49837

Vendor advisory comparison

Apache

1 advisory
  • Advisory severityMedium5.9

    Medium [CVE-2026-41603 +1] Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift Python bindings

    CVE-2026-66053Source published Source updated

    This bulletin covers 2 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.

    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 in this advisory
    • Apache Thrift Python
    Source-reported affected versions
    • 0.24.0
    Source-reported fixed versions
    • 0.24.0
    Mitigation guidance
    • Users are recommended to upgrade to version 0.24.0, which fixes the issue.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityMedium5.9

    Medium [CVE-2026-66053] Apache Thrift Python bindings: Information disclosure due to improper certificate validation

    CVE-2026-66053Source published Source updated

    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 This vulnerability, stemming from improper validation of certificates with host mismatch, could allow a remote attacker to intercept and access sensitive information. The issue occurs when the Python client fails to adequately verify the server's certificate against its hostname, potentially enabling a man-in-the-middle (MITM) attack and leading to information disclosure. While Red Hat Enterprise Linux AI is not affected, OpenShift Container Platform, Red Hat OpenShift Update Service, and Confidential Compute Attestation are impacted…

    Affected products in this advisory
    • Red Hat Hardened Images
    • Red Hat OpenShift Container Platform 4
    Source-reported affected versions
    • < 0.24.0
    Source-reported fixed versions
    • 0.24.0
    • thrift-main-0.24.0-0.1.hum1
    • RHSA-2026:49837
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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