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CVE-2026-41871VulnerabilityPublished 09/09/2026Updated 09/10/2026

CVE-2026-41871: CWE-862 Missing Authorization in Apache Software Foundation Apache Nutch

Affects Apache Software Foundation Apache NutchSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 10/25/2026, 04:40:12 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
Exploitation

Not in CISA KEV, no exploitation reported

EPSS
0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What to do

Affected software

ProductAffectedFixed in
Apache Software FoundationApache NutchAffected
  • >=1.10 <=1.22
Fixed in–
Mavenorg.apache.nutch/nutchpkg:maven/org.apache.nutch/nutchOther threatsAffected
  • =1.10
  • >=1.10 <=1.22
Fixed in–

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AI-suggested

Upgrade Apache Nutch to version 1.23, which removes the vulnerable Nutch Server component and thus mitigates the vulnerability. If upgrading is not possible, restrict access to the Nutch Service instances to trusted users only. Refer to the official Apache Nutch security advisories for further guidance.

Description

CVE-2026-41871 is a critical vulnerability in Apache Nutch Server's REST API affecting versions 1.10 through 1.22. It involves missing authorization and unsafe reflection, allowing unauthorized access and potentially full compromise. The vulnerability is fixed by upgrading to version 1.23, which removes the vulnerable Nutch Server component. If upgrading is not feasible, restricting access to trusted users is recommended.

Impact

The vulnerability has a CVSS 3.1 score of 9.8 (critical), indicating it allows remote attackers with no privileges and no user interaction to fully compromise confidentiality, integrity, and availability of affected systems running Apache Nutch Server versions 1.10 through 1.22. Exploitation could lead to unauthorized access and arbitrary code execution via unsafe reflection.

Weaknesses

References

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