CVE-2026-86536

Apache Thrift, Apache Thrift, Apache Thrift: A map key from the wire can replace a decoded object's prototype in generated JavaScript

State: Published
Severity: 6.3 Medium
Published: Oct 2, 2026
Updated: Oct 2, 2026
Reserved: Sep 7, 2026

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Description

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N	apache

Weaknesses

CWE-1321 Improperly controlled modification of object prototype attributes ('prototype pollution')

Affected Products

Product	Versions
Apache ThriftApache Software Foundation	before 0.25.0Affected
Apache ThriftApache Software Foundation	before 0.25.0Affected
Apache ThriftApache Software Foundation	before 0.25.0Affected

References

https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1vendor-advisory
https://lists.apache.org/thread/xckvfky30kdnk8vqnhy0wndthvc9nympvendor-advisory

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