---
id: CVE-2026-41603
title: >-
  Improper Validation of Certificate with Host Mismatch vulnerability in Apache
  Thrift.


  This issue affects Apache Thrift: before 0.23.0.


  Users are recommended to upgrade to version 0.23.0, which fixes the issue.
summary: >-
  Improper Validation of Certificate with Host Mismatch vulnerability in Apache
  Thrift.


  This issue affects Apache Thrift: before 0.23.0.


  Users are recommended to upgrade to version 0.23.0, which fixes the issue.
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-297
  - CWE-306
  - CWE-295
vendor: apache
product: thrift
affected:
  - thrift < 0.23.0
patched:
  - thrift 0.23.0
published: '2026-04-28'
updated: '2026-07-09'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-41603'
references:
  - url: 'https://lists.apache.org/thread/lb4j0zyd5f3g36cos0wql925przpnwql'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/04/28/7'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2026:14885'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:21769'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:22347'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:22423'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:23345'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:24539'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:36882'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-41603'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2463411'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41603.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-41603'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-41603'
tags:
  - nvd
  - csaf
  - vex
  - red-hat
epss: 0.00571
epssPercentile: 0.43798
ingestedAt: '2026-07-10T01:55:23.179Z'
scores:
  nvd: 7.4
  vendor: 8.2
---

## Overview

Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift.

This issue affects Apache Thrift: before 0.23.0.

Users are recommended to upgrade to version 0.23.0, which fixes the issue.

## Affected

- `thrift < 0.23.0`

## Remediation

Upgrade past the affected range:

- `thrift 0.23.0`

## Vendor advisories

- **RHSA-2026:22423** · Red Hat · fixed in: Multicluster Global Hub 1.3.4 · released 2026-06-02 · [advisory](https://access.redhat.com/errata/RHSA-2026:22423)
- **RHSA-2026:22347** · Red Hat · fixed in: Multicluster Global Hub 1.4.5 · released 2026-06-01 · [advisory](https://access.redhat.com/errata/RHSA-2026:22347)
- **RHSA-2026:23345** · Red Hat · fixed in: Multicluster Global Hub 1.6.5 · released 2026-06-04 · [advisory](https://access.redhat.com/errata/RHSA-2026:23345)
- **RHSA-2026:36882** · Red Hat · fixed in: Red Hat Advanced Cluster Management for Kubernetes 2.14 · released 2026-07-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:36882)
- **RHSA-2026:24539** · Red Hat · fixed in: Red Hat Advanced Cluster Management for Kubernetes 2.15 · released 2026-06-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:24539)
- **RHSA-2026:14885** · Red Hat · fixed in: Red Hat OpenShift distributed tracing 3.9.3 · released 2026-05-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:14885)
- **RHSA-2026:21769** · Red Hat · fixed in: Red Hat multicluster global hub 1.5.3 · released 2026-05-28 · [advisory](https://access.redhat.com/errata/RHSA-2026:21769)
- **Red Hat VEX** · Important · affected: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift Container Platform 4, Red Hat OpenShift GitOps · no fix planned: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift GitOps, Red Hat OpenShift Container Platform 4 · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41603.json)