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Critical severity9.8NVD Advisory· Published Sep 9, 2026· Updated Sep 10, 2026

CVE-2026-41871

CVE-2026-41871

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/ .

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Apache/Nutch2 versions
    cpe:2.3:a:apache:nutch:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:nutch:*:*:*:*:*:*:*:*range: >=1.10,<1.23
    • (no CPE)range: 1.10 - 1.22
  • Apache/Nutch Serverllm-fuzzy
    Range: 1.10 - 1.22

Patches

Vulnerability mechanics

References

2

News mentions

1