CVE-2026-41870

Apache Nutch: Unauthenticated remote code execution (RCE) via JEXL injection in Nutch Server (Nutch REST API)

Published: Sep 9, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-94

8.8HIGH

Description

Missing Authorization, Improper Control of Generation of Code ('Code Injection'), Improper Control of Dynamically-Managed Code Resources, 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 1.11 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:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-94 CWE-470 CWE-862 CWE-913

Affected Products

Apache Software Foundation

oss-project·USaka apache foundation

Apache NutchOn-prem

Web & CMS Plugins

apache

oss-project·USaka apache http server, apache httpd

nutchOn-premLibrary

OSS Libraries

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/3pl59g0jzqx1bdh5w92qoftzn7c3x8j2

lists.apache.org

http://www.openwall.com/lists/oss-security/2026/09/08/4

openwall.com

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