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VulnerabilityPublished Updated

CVE-2025-26511: NetApp Instaclustr fork of Stratio's Cassandra-Lucene-Index plugin · Incorrect Authorization

Affects NetApp Instaclustr fork of Stratio's Cassandra-Lucene-Index pluginSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 15:59 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Feb 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubinstaclustr/cassandra-lucene-indexpkg:github/instaclustr/cassandra-lucene-indexOther threatsAffected
  • =4.1.2-1.0.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

  1. Monitor official NetApp and Instaclustr advisories closely for patches addressing CVE-2025-26511 and apply them immediately upon release.
  2. Until patches are available, restrict access to Cassandra clusters running the vulnerable plugin to trusted administrators only, minimizing the number of authenticated users.
  3. Implement strict network segmentation and firewall rules to limit access to Cassandra nodes from untrusted networks.
  4. Enhance logging and monitoring of Cassandra user activities, focusing on unusual privilege escalations or access patterns.
  5. Conduct regular audits of RBAC configurations to ensure no excessive privileges are granted.
  6. Consider deploying additional security controls such as database activity monitoring (DAM) solutions to detect and alert on suspicious queries or commands.
  7. Educate administrators and developers about the risks of privilege escalation vulnerabilities and enforce the principle of least privilege.
  8. Evaluate alternative indexing solutions or plugin versions if immediate patching is not feasible, to reduce exposure.

Description

Systems running the Instaclustr fork of Stratio's Cassandra-Lucene-Index plugin versions 4.0-rc1-1.0.0 through 4.0.16-1.0.0 and 4.1.2-1.0.0 through 4.1.8-1.0.0, installed into Apache Cassandra version 4.x, are susceptible to a vulnerability which when successfully exploited could allow authenticated Cassandra users to remotely bypass RBAC and escalate their privileges.

References

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