CVE-2026-55969
Undergoing Analysis Undergoing Analysis - In Progress

Integer Overflow in Apache Thrift Bindings

Publication date: 2026-07-27

Last updated on: 2026-07-27

Assigner: Apache Software Foundation

Description
Integer Overflow or Wraparound vulnerability in Apache Thrift C++, c_glib, Go, netstd, Delphi and Haxe bindings. This issue affects Apache Thrift: before 0.24.0. Users are recommended to upgrade to version 0.24.0, which fixes the issue.

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Meta Information

Published
2026-07-27
Last Modified
2026-07-27
Generated
2026-07-27
AI Q&A
2026-07-27
EPSS Evaluated
N/A
NVD
CVE-2026-55969
EUVD
EUVD-2026-49153

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
apache thrift to 0.24.0 (exc)
apache thrift 0.24.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-190 The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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Executive Summary

CVE-2026-55969 is an integer overflow or wraparound vulnerability in Apache Thrift's C++, c_glib, Go, netstd, Delphi, and Haxe bindings. It occurs in the TProtocol::checkReadBytesAvailable() function and affects versions before 0.24.0.

Detection Guidance

Detection involves checking Apache Thrift versions and inspecting code for vulnerable functions. Use commands like 'thrift --version' to verify installed versions. If using C++ or c_glib bindings, review code for TProtocol::checkReadBytesAvailable() usage. Upgrade to version 0.24.0 or later to mitigate.

Impact Analysis

An integer overflow could allow attackers to bypass security checks, potentially leading to denial of service, data corruption, or unauthorized access. This may disrupt services relying on Apache Thrift for communication.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. However, if exploited, it could lead to unauthorized data access or processing, which may violate these regulations depending on the context of use.

Mitigation Strategies
  • Upgrade Apache Thrift to version 0.24.0 or later to address the integer overflow vulnerability.
  • Review and update all language bindings (C++, c_glib, Go, netstd, Delphi, Haxe) to ensure they are patched.

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