CVE•Published 2026-09-09•Modified 2026-09-10•1 article on news•5 live references•NVD data

CVE-2026-41871Apache · Nutch

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')CWE-862Missing Authorization

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/ .

Timeline

Published 2026-09-09

Modified 2026-09-10

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-41871

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Apache Nutch"

All exposed Apache Nutch instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Nutch"

HTTP body or banner mentions "Nutch" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-41871