CVE-2026-43871

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

HIGH

7.5

CVSS Score

Published: July 27, 2026 at 10:56 AM UTC

Updated: October 24, 2026 at 01:10 PM UTC

1 product affected across 1 vendorThrift

Using Apache Thrift by Apache Software Foundation?

Get instant alerts when new vulnerabilities affect Apache Thrift - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Thrift · Apachepypi

95%

v < 0.24.0

Affected range stops below 0.24.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Vendor AdvisoryRelease Notes

Source: cverecord

https://lists.apache.org/thread/7v3jhgwfbmhx42424phydlnzb109g8b9

Vendor Advisory

Source: cverecord

https://lists.apache.org/thread/l4dwf14zbyqsmkc28c99ojj3t3gg9qby

Mailing ListThird Party Advisory

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.openwall.com/lists/oss-security/2026/07/24/33

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-835

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card