Bug 2545155 (CVE-2026-94636)

Summary: CVE-2026-94636 thrift: Apache Thrift: Python `TZlibTransport` stops enforcing its decompressed-size limit once the limit is exactly used up
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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A flaw was found in Apache Thrift's Python bindings. This vulnerability allows an unauthenticated remote attacker to cause a Denial of Service (DoS) by sending specially crafted input or compressed payloads. Due to improper input validation and improper handling of compressed data, processing these requests can lead to excessive resource consumption.
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Description OSIDB Bzimport 2026-10-02 12:36:39 UTC 
Improper handling of highly compressed data (data amplification), Function call with incorrectly specified arguments, Improper validation of specified quantity in input vulnerability in Apache Thrift py bindings.



This issue affects Apache Thrift: before 0.25.0.



Users are recommended to upgrade to version 0.25.0, which fixes the issue.