CVE-2026-41871

Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)

Published: Sep 9, 2026Updated: Sep 10, 2026 Sources: CVE List NVDCWE-470

9.8CRITICAL

Description

Missing Authorization, Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Nutch Server (Nutch REST API). This issue affects Apache Nutch: from 1.10 through 1.22. Users are recommended to upgrade to version 1.23, which removes the Nutch Server. If an upgrade is not possible, user must restrict access to instances running the Nutch Service to trusted users only. Please, also visit the Apache Nutch security advisories https://nutch.apache.org/documentation/security/ .

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-470 CWE-862

Affected Products

apache

oss-project·USaka apache httpd, apache http server

nutchOn-premLibrary

OSS Libraries

Apache Software Foundation

oss-project·USaka apache foundation

Apache NutchOn-prem

Web & CMS Plugins

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques

Execution

Initial Access

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References

https://lists.apache.org/thread/rbr63fx8vlrhzrfknq2l0mg0d0blsl54

lists.apache.org

http://www.openwall.com/lists/oss-security/2026/09/08/5

openwall.com

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