Is CVE-2026-66859 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-66859 being exploited in the wild.

How severe is CVE-2026-66859?

Informational severity, published 2 October 2026.

Is there a fix for CVE-2026-66859?

Yes: fixed in 0.25.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-66859 attacked?

It is attacked over the network.

Am I affected by CVE-2026-66859?

Check whether you run Apache Thrift at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-66859: Apache Thrift NULL pointer dereference in c_glib bindings

CVE-2026-66859 · Severity: info · Published 2026-10-02

Apache Thrift is a framework for building cross-language services that allow communication between different programming languages. A NULL pointer dereference and use of uninitialized variable vulnerability in the c_glib bindings could cause the service to crash or behave unpredictably, potentially disrupting services that depend on Thrift for inter-process communication.

Technologies: Apache Thrift. Vendors: Apache.

Quick answers

Is CVE-2026-66859 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-66859 being exploited in the wild.
How severe is CVE-2026-66859?: Informational severity, published 2 October 2026.
Which products and versions are affected?: Apache Thrift before 0.25.0.
Is there a fix for CVE-2026-66859?: Yes: fixed in 0.25.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-66859 attacked?: It is attacked over the network.
Am I affected by CVE-2026-66859?: Check whether you run Apache Thrift at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 0.25.0

Technical details

The vulnerability is a NULL pointer dereference and use of uninitialized variable flaw in Apache Thrift's c_glib bindings. The c_glib bindings provide C language bindings for Thrift using the GLib library. Applications using the c_glib bindings before version 0.25.0 are affected.

Affected products

Apache Thrift before 0.25.0

Timeline

2026-10-02: disclosed

References

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