CVE-2026-41871: CWE-862 Missing Authorization in Apache Software Foundation Apache Nutch
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/ .
AI Analysis
Technical Summary
CVE-2026-41871 describes a missing authorization vulnerability (CWE-862) combined with unsafe reflection (CWE-470) in Apache Nutch Server's REST API. This flaw affects Apache Nutch versions from 1.10 through 1.22, enabling unauthorized users to potentially invoke code or classes without proper authorization checks. The Apache Software Foundation recommends upgrading to version 1.23, which removes the vulnerable Nutch Server component. If upgrading is not feasible, restricting access to trusted users is advised.
Potential Impact
The vulnerability allows unauthorized access to the Nutch Server REST API, potentially enabling attackers to execute unauthorized actions or code via unsafe reflection. This could lead to unauthorized control or manipulation of the affected service. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available by upgrading to Apache Nutch version 1.23, which removes the vulnerable Nutch Server component. If upgrading is not possible, restrict access to the Nutch Server instances to trusted users only. Refer to the official Apache Nutch security advisories for further guidance.
CVE-2026-41871: CWE-862 Missing Authorization in Apache Software Foundation Apache Nutch
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/ .
Affected software
pkg:maven/org.apache.nutch/nutchRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-41871 describes a missing authorization vulnerability (CWE-862) combined with unsafe reflection (CWE-470) in Apache Nutch Server's REST API. This flaw affects Apache Nutch versions from 1.10 through 1.22, enabling unauthorized users to potentially invoke code or classes without proper authorization checks. The Apache Software Foundation recommends upgrading to version 1.23, which removes the vulnerable Nutch Server component. If upgrading is not feasible, restricting access to trusted users is advised.
Potential Impact
The vulnerability allows unauthorized access to the Nutch Server REST API, potentially enabling attackers to execute unauthorized actions or code via unsafe reflection. This could lead to unauthorized control or manipulation of the affected service. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A fix is available by upgrading to Apache Nutch version 1.23, which removes the vulnerable Nutch Server component. If upgrading is not possible, restrict access to the Nutch Server instances to trusted users only. Refer to the official Apache Nutch security advisories for further guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-22T06:35:10.384Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa13a92acd9273b4930a72f
Added to database: 09/09/2026, 10:53:06 UTC
Last enriched: 09/09/2026, 11:10:38 UTC
Last updated: 09/10/2026, 00:26:16 UTC
Views: 10
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