Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: TCompactProtocol varint byte-count limit
CVE-2026-43871

8.7HIGH

Key Information:

Vendor

Apache
Status
Apache Thrift
Vendor
CVE Published:
27 July 2026

What is CVE-2026-43871?

Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Apache Thrift Python, Go, PHP and Java bindings.This issue affects Apache Thrift: before 0.24.0.

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

Affected Version(s)

Apache Thrift 0 < 0.24.0

Apache Thrift 0 < 0.24.0

Apache Thrift 0 < 0.24.0

References

https://lists.apache.org/thread/7v3jhgwfbmhx42424phydlnzb...
vendor-advisory
https://lists.apache.org/thread/l4dwf14zbyqsmkc28c99ojj3t...
vendor-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yu Bao - yubao@paypal.com, who works for paypal.com
.