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TI-2026-30276 Aliases CVE-2026-41871GHSA-5w4f-vwv7-mj4c

Apache Nutch: Unauthenticated reflection-based job execution in Nutch Server (Nutch REST API)

Priority MEDIUM 50CWE-470Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

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/ .

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00745 55th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Nutch1.10 – 1.22—No fix listedCNA
  • Apache Nutch VendorApache Affected 1.10 – 1.22 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:nutch:*:*:*:*:*:*:*:*1.10 to before 1.23VulnerableApache
  • cpe:2.3:a:apache:nutch:*:*:*:*:*:*:*:* Versions 1.10 to before 1.23 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41871
  2. 2026-10-03 Alias added: GHSA-5w4f-vwv7-mj4c

References

Advisory 2

  • TI-2016-05850 Apache Tika before 1.14 allows Java code execution for serialized objects embedded in… CVSS 3.1CRITICAL 9.8
  • TI-2026-30274 Apache Nutch: Unauthenticated forced shutdown and job interruption in Nutch Server (Nutch REST API) CVSS 3.1CRITICAL 9.1
  • TI-2021-06253 An XML external entity (XXE) injection vulnerability exists in the Nutch DmozParser CVSS 3.1CRITICAL 9.1
  • TI-2026-30275 Apache Nutch: Unauthenticated remote code execution (RCE) via JEXL injection in Nutch Server (Nutch REST API) CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences