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Advisory details: pypa / thrift/PYSEC-2026-3926
Advisory ID pypa/thrift/PYSEC-2026-3926
Aliases CVE-2026-43871
GHSA-8wv5-x4w7-5gww
PYSEC-2026-3926
Summary Apache Thrift Python, Go, PHP and Java bindings have an Infinite Loop 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.
Status Published
Exploitability 0.5
Weighted Severity 7.8
Risk 3.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 7.5 https://github.com/pypa/advisory-database/blob/main/vulns/thrift/PYSEC-2026-3926.yaml
cvssv4 8.7 https://github.com/pypa/advisory-database/blob/main/vulns/thrift/PYSEC-2026-3926.yaml
Reference id Reference type URL
https://github.com/apache/thrift
https://pypi.org/project/thrift
http://www.openwall.com/lists/oss-security/2026/07/24/33
7v3jhgwfbmhx42424phydlnzb109g8b9 Advisory https://lists.apache.org/thread/7v3jhgwfbmhx42424phydlnzb109g8b9
CVE-2026-43871 https://nvd.nist.gov/vuln/detail/CVE-2026-43871
GHSA-8wv5-x4w7-5gww https://github.com/advisories/GHSA-8wv5-x4w7-5gww
l4dwf14zbyqsmkc28c99ojj3t3gg9qby Advisory https://lists.apache.org/thread/l4dwf14zbyqsmkc28c99ojj3t3gg9qby
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/pypa/advisory-database/blob/main/vulns/thrift/PYSEC-2026-3926.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/pypa/advisory-database/blob/main/vulns/thrift/PYSEC-2026-3926.yaml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.