High severity · published May 5, 2026
CVE-2026-43869
Apache Thrift: TSSLTransportFactory.java hostname verification
7.3
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AT
Apache Thrift · Apache Software Foundation
before 0.23.0 · source: vendor
TH
Thrift · Apache
before 0.23.0 · source: NVD
C4
Cryostat 4 on RHEL 9 · Red Hat
All versions, or not specified · source: CISA
MG
Multicluster Global Hub · Red Hat
All versions, or not specified · source: CISA
MG
Multicluster Global Hub 1.3.4 · Red Hat
All versions, or not specified · source: CISA
MG
Multicluster Global Hub 1.4.5 · Red Hat
All versions, or not specified · source: CISA
MG
Multicluster Global Hub 1.6.5 · Red Hat
All versions, or not specified · source: CISA
MG
Multicluster Global Hub 1.7.0 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat AI Inference Server · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Advanced Cluster Management for Kubernetes 2 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Advanced Cluster Management for Kubernetes 2.13 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Advanced Cluster Management for Kubernetes 2.14 · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43869
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43869
Vendor Advisory
https://lists.apache.org/thread/3hsgl1b69wzq3ry39scqbv2dhyl3j52r
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/05/3
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:21769
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:22347
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:22423
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:23345
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