CVE-2026-41871 Apache Nutch - Unsafe Reflection

Apache Nutch 1.10 through 1.22 contains an unsafe reflection vulnerability caused by use of externally-controlled input to select classes or code in Nutch Server (Nutch REST API), letting attackers bypass authorization, exploit requires access to Nutch Server.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
EPSS
0.74% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Unsafe Reflection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
9 September 2026
Updated
15 October 2026
Weakness
CWE-470

Vendor fix

Upgrade to version 1.23 or restrict access to trusted users only.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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