Apache Thrift JS Prototype Pollution <0.25.0
CVE-2026-86536 Published on October 2, 2026
Apache Thrift, Apache Thrift, Apache Thrift: A map key from the wire can replace a decoded object's prototype in generated JavaScript
Improperly controlled modification of object prototype attributes ('prototype pollution') vulnerability in Apache Thrift all JS bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0 and re-generate JS code, which fixes the issue.
Vulnerability Analysis
CVE-2026-86536 is exploitable 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 Type
What is a Prototype Pollution Vulnerability?
The software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
CVE-2026-86536 has been classified to as a Prototype Pollution vulnerability or weakness.
Products Associated with CVE-2026-86536
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Affected Versions
Apache Software Foundation Apache Thrift:- Before 0.25.0 is affected.
- Before 0.25.0 is affected.
- Before 0.25.0 is affected.