CVE-2026-43869 Apache Thrift: TSSLTransportFactory.java hostname verification
Apache Thrift fails to verify TLS certificate hostnames, allowing attackers to bypass security checks and potentially intercept or manipulate encrypted communications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-43869?
CVE-2026-43869 is a high-severity vulnerability in Apache Thrift, published on 5 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-43869?
3 open source packages ship an affected version, including org.apache.thrift:libthrift and thrift. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.thrift:libthrift Maven | All versions | 0.23.0 |
org.apache.thrift:libthrift Maven | All versions | 0.23.0 |
thrift Bitnami | All versions | 0.23.0 |
Products include Apache Thrift.
How do I fix CVE-2026-43869?
Upgrade org.apache.thrift:libthrift to 0.23.0 or later.
Is CVE-2026-43869 being exploited?
There is no known exploitation of CVE-2026-43869 in the wild and no public exploit code.
Other vulnerabilities in Apache Thrift
- CVE-2026-55971 Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()
- CVE-2026-48144 Apache Thrift: c_glib TLS Client Missing Hostname Verification
- CVE-2016-5397 Apache Thrift Go Library Command Injection
- CVE-2026-43871 Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: TCompactProtocol varint byte-count limit
- CVE-2026-48586 Denial of service in Apache Thrift
Sources
Also known as BIT-thrift-2026-43869, CLEANSTART-2026-KF27274, CLEANSTART-2026-XX98382, CLSA-2026-1783645394, DEBIAN-CVE-2026-43869, ECHO-c19a-6b01-8c6e and 9 more.