CVE-2026-43869
published 2026-05-05CVE-2026-43869: Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to…
PriorityP345high7.3CVSS 3.1
AVNACLPRNUINSUCLILAL
EPSS
0.81%
56.5th percentile
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
24 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | thrift | < 0.23.0 | 0.23.0 |
| apache_software_foundation | apache_thrift | < 0.23.0 | 0.23.0 |
| cryostat | cryostat-storage-rhel9 | — | — |
| grafana | grafana | — | — |
| multicluster-globalhub | multicluster-globalhub-grafana-rhel8 | — | — |
| multicluster-globalhub | multicluster-globalhub-grafana-rhel9_1778867753 | — | — |
| openshift4 | cnf-tests-rhel8 | — | — |
| openshift4 | oc-mirror-plugin-rhel9 | — | — |
| openshift4 | ztp-site-generate-rhel8 | — | — |
| redhat-user-workloads | cnf-tests-4-15 | — | — |
| redhat-user-workloads | grafana-acm-212 | — | — |
| redhat-user-workloads | grafana-acm-213 | — | — |
| redhat-user-workloads | ztp-site-generate-4-15 | — | — |
| redhat-user-workloads | ztp-site-generate-4-16 | — | — |
| rhacm2 | acm-grafana-rhel9 | — | — |
| rhaiis | vllm-cpu-rhel9 | — | — |
| rhaiis | vllm-tpu-rhel9 | — | — |
| rhoai | odh-modelmesh-rhel8 | — | — |
| rhoai | odh-modelmesh-rhel9 | — | — |
| rhosdt | opentelemetry-collector-rhel9 | — | — |
| rhosdt | tempo-jaeger-query-rhel9 | — | — |
| rhosdt | tempo-query-rhel9 | — | — |
| rhosdt | tempo-rhel9 | — | — |
| rhoso-operators | openstack-operator-bundle | — | — |
CVSS provenance
nvdv3.17.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
vendor_redhat7.3HIGH
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GHSA
Apache Thrift has an Improper Validation of Certificate with Host Mismatch Vulnerability
ghsa·2026-05-05
CVE-2026-43869 [HIGH] CWE-297 Apache Thrift has an Improper Validation of Certificate with Host Mismatch Vulnerability
Apache Thrift has an Improper Validation of Certificate with Host Mismatch Vulnerability
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](https://github.com/apache/thrift/releases/tag/v0.23.0), which fixes the issue.
GHSA
GHSA-7pwc-h2j2-rjgj: Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift
ghsa_unreviewed·2026-05-05
CVE-2026-43869 [HIGH] CWE-297 GHSA-7pwc-h2j2-rjgj: Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift
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.
Red Hat
Apache Thrift: Apache Thrift: Security bypass due to improper certificate validation
vendor_redhat·2026-05-05·CVSS 7.3
CVE-2026-43869 [HIGH] CWE-295 Apache Thrift: Apache Thrift: Security bypass due to improper certificate validation
Apache Thrift: Apache Thrift: Security bypass due to improper certificate validation
A flaw was found in Apache Thrift. This vulnerability involves improper validation of a certificate with a host mismatch, which could allow a remote attacker to bypass security checks. By presenting a specially crafted certificate, an attacker may impersonate a legitimate server or client. This could lead to a security bypass, potentially enabling unauthorized access or information disclosure.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Package: cryostat/cryostat-storage-rhel9 (Cryostat 4) - Affected
Pa
No detection rules found.
No public exploits indexed.
Rapid7
Patch Tuesday - May 2026
blogs_rapid7·2026-05-13·CVSS 10.0
CVE-2026-41089 [CRITICAL] Patch Tuesday - May 2026
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
## Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089 , which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges
Bugzilla
CVE-2026-43869 migrate: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
bugzilla·2026-05-28·CVSS 7.3
CVE-2026-43869 [HIGH] CVE-2026-43869 migrate: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
CVE-2026-43869 migrate: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-43869 python-avro: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
bugzilla·2026-05-28·CVSS 7.3
CVE-2026-43869 [HIGH] CVE-2026-43869 python-avro: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
CVE-2026-43869 python-avro: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-43869 golang-github-apache-thrift: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
bugzilla·2026-05-28·CVSS 7.3
CVE-2026-43869 [HIGH] CVE-2026-43869 golang-github-apache-thrift: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
CVE-2026-43869 golang-github-apache-thrift: Apache Thrift: Security bypass due to improper certificate validation [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-43869 Apache Thrift: Apache Thrift: Security bypass due to improper certificate validation
bugzilla·2026-05-05·CVSS 7.3
CVE-2026-43869 [HIGH] CVE-2026-43869 Apache Thrift: Apache Thrift: Security bypass due to improper certificate validation
CVE-2026-43869 Apache Thrift: Apache Thrift: Security bypass due to improper certificate validation
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.
https://lists.apache.org/thread/3hsgl1b69wzq3ry39scqbv2dhyl3j52rhttp://www.openwall.com/lists/oss-security/2026/05/05/3https://access.redhat.com/errata/RHSA-2026:21769https://access.redhat.com/errata/RHSA-2026:22347https://access.redhat.com/errata/RHSA-2026:22423https://access.redhat.com/errata/RHSA-2026:23345https://access.redhat.com/errata/RHSA-2026:24503https://access.redhat.com/errata/RHSA-2026:24539https://access.redhat.com/errata/RHSA-2026:25273https://access.redhat.com/errata/RHSA-2026:26586https://access.redhat.com/errata/RHSA-2026:27126https://access.redhat.com/errata/RHSA-2026:28010https://access.redhat.com/errata/RHSA-2026:30651https://access.redhat.com/errata/RHSA-2026:36882https://access.redhat.com/errata/RHSA-2026:42644https://access.redhat.com/security/cve/CVE-2026-43869https://bugzilla.redhat.com/show_bug.cgi?id=2466660https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43869.json
2026-05-05
Published