CVE-2025-26511Network attack vector

Authenticated privilege escalation via skipped statement authorization

Published Feb 13, 2025 · Updated Jan 22, 2026

Incorrect authorization in NetApp Cassandra Lucene Index plugin allows remote authenticated users to read restricted data and escalate privileges. IndexQueryHandler handles intercepted Lucene search statements without calling Cassandra's statement.authorize and statement.validate methods. Exploitation requires Cassandra 4.x, a vulnerable plugin configured for use, table data, a Lucene index, and a completed Cassandra flush.

CVSS severity8.8
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in NetApp Cassandra Lucene Index plugin allows remote authenticated users to read restricted data and escalate privileges. IndexQueryHandler handles intercepted Lucene search statements without calling Cassandra's statement.authorize and statement.validate methods. Exploitation requires Cassandra 4.x, a vulnerable plugin configured for use, table data, a Lucene index, and a completed Cassandra flush.

The record

CVE
CVE-2025-26511
Published
Feb 13, 2025
Updated
Jan 22, 2026
Vendor
NetApp
Product
Cassandra Lucene Index plugin (Instaclustr fork)
Classifications
CWE-863, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.0-rc1-1.0.0 <=4.0.16-1.0.0
  2. Affected versionversion=4.1.2-1.0.0 <=4.1.8-1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NetApp · Cassandra Lucene Index plugin (Instaclustr fork)version=4.0-rc1-1.0.0 <=4.0.16-1.0.0; version=4.1.2-1.0.0 <=4.1.8-1.0.0

Published CVSS scores

8.8GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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