CVE-2026-41871CWE-470CWE-862broken-access-control

CVE-2026-41871

Critical · published September 9, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
54.3
In the wild
Unconfirmed
What it is

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/ .

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00745 · 54.3th percentile
Weaknesses
CWE-470 · Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection'); CWE-862 · Missing Authorization
Published
2026-09-09T15:17Z
Affected products (1)
ProductVersionsFixed in
apache/nutch≥ 1.10, < 1.231.23
References (2)
https://lists.apache.org/thread/rbr63fx8vlrhzrfknq2l0mg0d0blsl54 · [email protected]http://www.openwall.com/lists/oss-security/2026/09/08/5 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 11 SEP 03:17Z
    EPSS moved — → 0%
    epss
  • 09 SEP 10:45Z
    Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)
    cvelistv5