CVE-2026-55971

Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()

State: Published
Severity: 9.3 Critical
Published: Jul 27, 2026
Updated: Jul 28, 2026
Reserved: Jun 17, 2026

Description

Heap-based Buffer Overflow vulnerability in Apache Thrift C++ bindings.

This issue affects Apache Thrift: before 0.24.0.

Users are recommended to upgrade to version 0.24.0, which fixes the issue.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	apache

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
Apache ThriftApache Software Foundation	before 0.24.0Affected

References

https://lists.apache.org/thread/7v3jhgwfbmhx42424phydlnzb109g8b9vendor-advisory
https://lists.apache.org/thread/xjs36m6kjxpmrmzwck636msg3nvoqnmxvendor-advisory
http://www.openwall.com/lists/oss-security/2026/07/24/42

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