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CVE-2026-41871— Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)

Quick assessment

Affected
Apache Software Foundation Apache Nutch
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Nutch是美国Apache基金会开源的一款服务端软件产品。 Apache Nutch 1.10版本至1.22版本存在安全漏洞，该漏洞源于其Nutch REST API缺少授权且使用外部控制的输入选择类或代码（不安全反射），可能导致攻击者绕过授权或执行任意代码。

AI Predicted 6.1 Difficulty: Moderate EPSS 0.74% · P54

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Nutch 1.10≤ 1.22 affected
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I. Basic Information for CVE-2026-41871

Vulnerability Information
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Vulnerability Title
Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)
Source: CVE Program / CVE List V5
Vulnerability 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/ .
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Nutch 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Nutch是美国Apache基金会开源的一款服务端软件产品。 Apache Nutch 1.10版本至1.22版本存在安全漏洞，该漏洞源于其Nutch REST API缺少授权且使用外部控制的输入选择类或代码（不安全反射），可能导致攻击者绕过授权或执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Nutch 1.10 ~ 1.22 -

II. Public POCs for CVE-2026-41871

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III. Intelligence Information for CVE-2026-41871

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Mailing List Discussions for CVE-2026-41871 (1)

Same Patch Batch · Apache Software Foundation · 2026-09-09 · 9 CVEs total

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IV. Related Vulnerabilities

Same product: Apache Nutch
Same vendor: Apache Software Foundation
Same weakness: CWE-862

V. Comments for CVE-2026-41871

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