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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 服务器（Nutch REST API）中存在“缺少授权”及“使用外部可控输入来选择类或代码（‘不安全的反射’）”漏洞。 该问题影响 Apache Nutch 1.10 至 1.22 版本。 建议用户升级至 1.23 版本，该版本已移除 Nutch Server。如果无法升级，则必须限制运行 Nutch 服务的实例仅允许受信任的用户访问。 请访问 Apache Nutch 安全公告页面获取更多信息：https://nutch.apache.org/documentation/security

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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

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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Other References for CVE-2026-41871 (1)

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

CVE-2026-74761 Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Spoofing of RemoveSubscripti
CVE-2026-73334 Apache Parquet Hadoop: File-controlled KMS URL is forwarded to pluggable KmsClient that sk
CVE-2026-41869 Apache Nutch: Unauthenticated forced shutdown and job interruption in Nutch Server (Nutch
CVE-2026-41870 Apache Nutch: Unauthenticated remote code execution (RCE) via JEXL injection in Nutch Serv
CVE-2026-65181 Apache Impala: RCE via External Data Source Class Loading
CVE-2026-57866 Apache Impala: Secrets Exfiltration via SSRF
CVE-2026-56207 Apache Impala: SAML authentication bypass via forged bearer token
CVE-2026-54048 Apache Impala: Avro Schema URL Server-Side Request Forgery

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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