{"id":"CVE-2026-66053","title":"thrift: Apache Thrift Python bindings: Information disclosure due to improper certificate validation (CVE-2026-66053)","summary":"A flaw was found in Apache Thrift Python bindings. 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…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cvssSource":"vendor","cwe":"CWE-295","vendor":"Red Hat","product":"Red Hat Hardened Images","affected":["enterprise_linux_ai_rhel_ai 3","ceph_storage 7","ceph_storage 8","ceph_storage 9","hardened_images"],"patched":["hardened_images"],"published":"2026-07-27","updated":"2026-10-16","sourceUpdated":"2026-10-16T04:01:58+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-66053.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-66053.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-66053"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507445"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-66053"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66053"},{"url":"https://lists.apache.org/thread/7v3jhgwfbmhx42424phydlnzb109g8b9"},{"url":"https://lists.apache.org/thread/w4k5dnv1x58knwlhpo9x0or5xh220y65"},{"url":"https://access.redhat.com/errata/RHSA-2026:49837"},{"url":"https://github.com/apache/thrift"},{"url":"https://pypi.org/project/thrift"},{"url":"https://github.com/advisories/GHSA-hwrj-9rr4-24xh"}],"tags":["csaf","vex","red-hat","osv","pip"],"epss":0.00292,"epssPercentile":0.21663,"aliases":["GHSA-hwrj-9rr4-24xh","BIT-thrift-2026-66053","PYSEC-2026-3927"],"ecosystem":"pip","ingestedAt":"2026-09-02T19:31:23.371Z","slug":"CVE-2026-66053","body":"## Overview\n\nA flaw was found in Apache Thrift Python bindings. 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.\n\n## Vendor advisories\n\n- **RHSA-2026:49837** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-08-03 · [advisory](https://access.redhat.com/errata/RHSA-2026:49837)\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat Ceph Storage 7, Red Hat Ceph Storage 8, Red Hat Ceph Storage 9 · no fix planned: Red Hat Enterprise Linux AI (RHEL AI) 3 · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-66053.json)\n\n**thrift: Apache Thrift Python bindings: Information disclosure due to improper certificate validation** — rated Moderate by Red Hat. Released 2026-07-27, updated 2026-10-16.\n\nAffected:\n\n- Red Hat Enterprise Linux AI (RHEL AI) 3\n- Red Hat Ceph Storage 7\n- Red Hat Ceph Storage 8\n- Red Hat Ceph Storage 9\n\nFixed:\n\n- Red Hat Hardened Images\n\nNo fix planned:\n\n- Red Hat Enterprise Linux AI (RHEL AI) 3\n\n## Remediation\n\nFor details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/ https://access.redhat.com/errata/RHSA-2026:49837\n\n## Package advisory (CVE-2026-66053)\n\nAffected packages:\n\n- `thrift < 0.24.0`\n\nPatched in:\n\n- `thrift 0.24.0`\n\nSource: https://osv.dev/vulnerability/GHSA-hwrj-9rr4-24xh","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}