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HIGH

CVE-2026-43871

Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: TCompactProtocol varint byte-count limit

CVSS v3

7.5

HIGH

EPSS Score

1.0 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

none

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • apache/thriftPackagistall versions · fixed in 0.24.0
  • github.com/apache/thriftGoall versions · fixed in 0.24.0
  • org.apache.thrift:libthriftMavenall versions · fixed in 0.24.0
  • thriftPyPIall versions · fixed in 0.24.0
  • thriftBitnamiall versions · fixed in 0.24.0

Vendor advisories

  • CVE-2026-43871 Red Hat Product Security4 products fixed · 2 known affected

    thrift: Apache Thrift: Denial of Service via infinite loop

    thrift.src as a component of Red Hat Enterprise Linux AI (RHEL AI) 3 · openshift-update-service/openshift-update-service-rhel8 as a component of Red Hat OpenShift Update Service

  • RHSA-2026:49837 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-07-27
Last Modified
2026-07-27

Frequently asked questions

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.

Is CVE-2026-43871 actively exploited?

Active exploitation of CVE-2026-43871 has not been confirmed. Its EPSS score was 1.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-43871?

CVE-2026-43871 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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