CVE-2026-41870 PUBLISHED

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

Assigner: apache
Reserved: 22.04.2026 Published: 09.09.2026 Updated: 09.09.2026

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/ .

Product Status

Vendor Apache Software Foundation
Product Apache Nutch
Versions Default: unaffected
  • affected from 1.11 to 1.22 (incl.)

Credits

  • The Apache Nutch Project Management Committee would like to thank Th1nk for reporting this issue. reporter

References

Problem Types

  • CWE-862 Missing Authorization CWE
  • CWE-94 Improper Control of Generation of Code ('Code Injection') CWE
  • CWE-913 Improper Control of Dynamically-Managed Code Resources CWE
  • CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') CWE