CVE-2026-41870

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

Published Sep 9, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
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/ .

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:nutch:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Apache
Apache nutch
Vendors & Products Apache
Apache nutch
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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/ .
Title Apache Nutch: Unauthenticated remote code execution (RCE) via JEXL injection in Nutch Server (Nutch REST API)
Weaknesses CWE-470
CWE-862
CWE-913
CWE-94
References

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Sep 10, 2026, 6:03 PM
Reserved
Apr 22, 2026, 6:33 AM
Status
Analyzed
Published
Sep 9, 2026, 11:17 AM
Modified
Sep 11, 2026, 1:06 PM