Apache Thrift CVE-2026-41603: Improper Cert Host Mismatch Before 0.23.0
CVE-2026-41603 Published on April 28, 2026

Apache Thrift: Java TSSLTransportFactory hostname verification
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.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-41603 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Types

Improper Validation of Certificate with Host Mismatch

The software communicates with a host that provides a certificate, but the software does not properly ensure that the certificate is actually associated with that host.

Missing Authentication for Critical Function

The software does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Improper Certificate Validation

The software does not validate, or incorrectly validates, a certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.


Products Associated with CVE-2026-41603

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-41603 are published in these products:

Apache Thrift
 
Red Hat Multicluster Globalhub
 
Red Hat Acm
 
Red Hat Openshift Distributed Tracing
 
Red Hat Ai Inference Server
 
Red Hat Enterprise Linux Ai
 
Red Hat Openshift
 
Red Hat Openshift Gitops
 
Red Hat Service Mesh
 
Red Hat Openshift Ai
 

Affected Versions

Apache Software Foundation Apache Thrift: Red Hat Multicluster Global Hub 1.3.4: Red Hat Multicluster Global Hub 1.4.5: Red Hat Multicluster Global Hub 1.5.4: Red Hat Multicluster Global Hub 1.6.2: Red Hat Advanced Cluster Management for Kubernetes 2.14: Red Hat Advanced Cluster Management for Kubernetes 2.15: Red Hat OpenShift distributed tracing 3.9.3: Red Hat OpenShift distributed tracing 3.9.3: Red Hat OpenShift distributed tracing 3.9.3: Red Hat OpenShift Service Mesh 2: Red Hat AI Inference Server: Red Hat AI Inference Server: Red Hat AI Inference Server: Red Hat AI Inference Server: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift AI (RHOAI): Red Hat OpenShift Container Platform 4: Red Hat OpenShift Container Platform 4: Red Hat OpenShift distributed tracing 3: Red Hat OpenShift GitOps: Red Hat OpenShift GitOps:

Exploit Probability

EPSS
0.25%
Percentile
16.25%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.