Vulnary
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Critical· 9.1official fix available

CVE-2026-41869

Apache Nutch Server’s REST API has a critical flaw that lets anyone access it without permission, potentially causing data loss or service disruption. The issue exists in versions 1.10 through 1.22. Upgrading to 1.23 removes the vulnerable component.

publishedSep 9, 2026
last modifiedSep 10, 2026
sourcesNVD
severity · cvss
9.1
critical · how bad it is
exploitation · epss
<1%
54th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Oct 10, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

Apache Nutch 1.10 to 1.22 users running the Nutch Server (REST API).

02

Real-world impact

An attacker could use the unprotected REST API to delete or interrupt jobs, causing loss of data or denial of service.

03

Why this severity

The CVSS score of 9.1 reflects that the vulnerability has no authentication requirement, can be exploited remotely, and can lead to complete loss of data and service availability.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade Apache Nutch to version 1.23 or later, which removes the Nutch Server component.
interim mitigations
  • ›If you cannot upgrade, restrict access to the Nutch Service to trusted users only.

NVD-referenced vendor advisory

05

Timeline

  1. Sep 9, 2026 · 5d ago
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Sep 10, 2026 · 3d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone needed
ScopeUnchanged
Confidentiality impactHigh
Integrity impactNone
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →