Instaclustr Cassandra-Lucene-Index plugin up to 4.0.16-1.0.0/4.1.8-1.0.0 RBAC authentication bypass

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Instaclustr Cassandra-Lucene-Index plugin up to 4.0.16-1.0.0/4.1.8-1.0.0 and classified as critical. Impacted is an unknown function of the component RBAC. The manipulation results in authentication bypass. This vulnerability is known as CVE-2025-26511. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Instaclustr Cassandra-Lucene-Index plugin up to 4.0.16-1.0.0/4.1.8-1.0.0. Affected is an unknown code of the component RBAC. The manipulation with an unknown input leads to a authentication bypass vulnerability. CWE is classifying the issue as CWE-288. A product requires authentication, but the product has an alternate path or channel that does not require authentication. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-26511 since 02/11/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-4205). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (netapp): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication bypass
CWE: CWE-288 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/11/2025 🔍
02/13/2025 +2 days 🔍
02/13/2025 +0 days 🔍
01/23/2026 +344 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2025-26511 (🔍)
GCVE (CVE): GCVE-0-2025-26511
GCVE (VulDB): GCVE-100-295740
EUVD: 🔍

Entryinfo

Created: 02/13/2025 17:10
Updated: 01/23/2026 14:56
Changes: 02/13/2025 17:10 (62), 02/14/2025 12:46 (1), 01/23/2026 14:56 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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