Memory alloc with excessive size in Apache Thrift Dart bindings before 0.25.0
CVE-2026-94633 Published on October 2, 2026
Apache Thrift: Dart `TBinaryProtocol.readMessageBegin` allocates from the pre-versioned name length
Memory allocation with excessive size value, Improper handling of length parameter inconsistency vulnerability in Apache Thrift Dart bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Vulnerability Analysis
CVE-2026-94633 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Types
What is a Stack Exhaustion Vulnerability?
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
CVE-2026-94633 has been classified to as a Stack Exhaustion vulnerability or weakness.
What is a length manipulation Vulnerability?
The software parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data. If an attacker can manipulate the length parameter associated with an input such that it is inconsistent with the actual length of the input, this can be leveraged to cause the target application to behave in unexpected, and possibly, malicious ways. One of the possible motives for doing so is to pass in arbitrarily large input to the application. Another possible motivation is the modification of application state by including invalid data for subsequent properties of the application. Such weaknesses commonly lead to attacks such as buffer overflows and execution of arbitrary code.
CVE-2026-94633 has been classified to as a length manipulation vulnerability or weakness.
Products Associated with CVE-2026-94633
Want to know whenever a new CVE is published for Apache Thrift? stack.watch will email you.
Affected Versions
Apache Software Foundation Apache Thrift:- Before 0.25.0 is affected.