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Apache disclosed CVE-2026-55971, a heap-based buffer overflow in the C++ bindings of Apache Thrift affecting versions earlier than 0.24.0. The flaw occurs in THeaderTransport::untransform() and is tied to ZLIB processing, allowing a heap buffer overwrite condition classified as CWE-122. The issue was reported by Ghaith Abdulreda and published through Apache and oss-security advisories.
Apache has directed users to upgrade to Apache Thrift 0.24.0 to remediate the vulnerability. Public CVE records describe the issue as having high potential impact on confidentiality, integrity, and availability, making exposed or unpatched C++ Thrift deployments a priority for review and patching.
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The CVE entry states that CVE-2026-55971 was newly received by security@apache.org on July 27, 2026. The record classifies the flaw as CWE-122 and includes a CVSS v4.0 vector indicating high impact to confidentiality, integrity, and availability.
Apache disclosed CVE-2026-55971, a heap-based buffer overflow in the C++ bindings of Apache Thrift involving ZLIB handling in THeaderTransport::untransform(). The advisory said versions before 0.24.0 are affected and recommended upgrading to Apache Thrift 0.24.0; Ghaith Abdulreda was credited with finding the issue.
Apache announced the release of Apache Thrift 0.24.0. This is the version later recommended in the CVE-2026-55971 advisory as the fixed upgrade target.
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Apache disclosed **CVE-2026-55969**, a high-severity integer overflow or wraparound vulnerability in `TProtocol::checkReadBytesAvailable()` that affects Apache Thrift versions before **0.24.0**. The flaw was initially reported as impacting the **C++** and **c_glib** bindings, and subsequent vulnerability reporting expanded the affected surface to include **Go**, **netstd**, **Delphi**, and **Haxe** bindings as well. The vulnerability is rated **CVSS 4.0 8.7** and is described as remotely exploitable, raising concern for applications that use vulnerable Thrift components to process untrusted input. Apache said users should upgrade to **version 0.24.0 or later** to remediate the issue; the bug was reported by **Ghaith Abdulreda** and **Javid Khan** and disclosed publicly by **Jens Geyer**.
Jul 28, 2026
Apache disclosed **CVE-2026-48586**, a high-severity flaw in **Apache Thrift** caused by improper handling of highly compressed data in `TZlibTransport`. The issue is described as a **data amplification** weakness in decompression size limiting, allowing a remote attacker to send crafted compressed input that can trigger excessive resource consumption and impact service availability. The vulnerability affects Apache Thrift versions **before 0.24.0** across multiple language bindings, including **C++**, **Java**, **Python**, **Go**, **D**, and **C/GLib**. The flaw carries a **CVSS 4.0 score of 8.7** and is considered **remotely exploitable**. Apache has released a fix in **version 0.24.0** and recommends upgrading affected deployments to remediate the issue.
Jul 28, 2026
The Canadian Centre for Cyber Security issued advisory **AV26-749** warning that **Apache Thrift** versions prior to **0.24.0** are affected by multiple vulnerabilities. The notice identifies four flaws — `CVE-2026-48586`, `CVE-2026-49158`, `CVE-2026-55969`, and `CVE-2026-58023` — and says the issues impact Apache products using the framework, with affected users directed to Apache notices for additional details. The disclosed weaknesses include decompression size-limit failures, a potential **decompression bomb**, an **integer overflow**, and a **heap out-of-bounds read**. Security officials urged users and administrators to review the vendor advisories and apply updates as they become available, with the fixes tied to upgrading to **Apache Thrift 0.24.0** or later.
Jul 28, 2026