CVE-2025-26511
Cassandra-Lucene-Index allows bypass of Cassandra RBAC
CVE-2025-26511 is a high vulnerability (CVSS 8.8) in Netapp Instaclustr Fork Of Stratio's Cassandra-lucene-index Plugin, published February 13, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. Fixed in com.instaclustr:cassandra-lucene-index-plugin 4.0.17-1.0.0.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Cassandra-Lucene-Index allows bypass of Cassandra RBAC
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.
- Record
CVE-2025-26511- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2025-4205
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.
- Record
EUVD-2025-4205- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mrqp-q7vx-v2cx
Instaclustr Cassandra-Lucene-Index allows bypass of Cassandra RBAC
Summary / Details 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 4.1.0-1.0.0 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 to access data and and escalate their privileges.
Affected Versions
- Cassandra-Lucene-Index plugin versions 4.0-rc1-1.0.0 through 4.0.16-1.0.0
- versions 4.1.0-1.0.0 through 4.1.8-1.0.0 when installed into Apache Cassandra version 4.x.
Required Configuration for Exploit These are the conditions required to enable exploit:
- Cassandra 4.x
- Vulnerable version of the Cassandra-Lucene-Index plugin configured for use
- Data added to tables
- Lucene index created
- Cassandra flush has run
Mitigation/Prevention Mitigation requires dropping all Lucene indexes and stopping use of the plugin. Exploit will be possible any time the required conditions are met.
Solution
Upgrade to a fixed version of the Cassandra-Lucene-Index plugin.
Review users in Cassandra to validate all superuser privileges.
- Record
GHSA-mrqp-q7vx-v2cx- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-288, CWE-863
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-26511- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSV
Cassandra-Lucene-Index allows bypass of Cassandra RBAC
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.
- Record
CVE-2025-26511- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-863
- Updated
- 2026-11-02
OSVGHSA-mrqp-q7vx-v2cx
Instaclustr Cassandra-Lucene-Index allows bypass of Cassandra RBAC
Summary / Details 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 4.1.0-1.0.0 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 to access data and and escalate their privileges.
Affected Versions
- Cassandra-Lucene-Index plugin versions 4.0-rc1-1.0.0 through 4.0.16-1.0.0
- versions 4.1.0-1.0.0 through 4.1.8-1.0.0 when installed into Apache Cassandra version 4.x.
Required Configuration for Exploit These are the conditions required to enable exploit:
- Cassandra 4.x
- Vulnerable version of the Cassandra-Lucene-Index plugin configured for use
- Data added to tables
- Lucene index created
- Cassandra flush has run
Mitigation/Prevention Mitigation requires dropping all Lucene indexes and stopping use of the plugin. Exploit will be possible any time the required conditions are met.
Solution
Upgrade to a fixed version of the Cassandra-Lucene-Index plugin.
Review users in Cassandra to validate all superuser privileges.
- Record
GHSA-mrqp-q7vx-v2cx- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-288, CWE-863
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.instaclustr:cassandra-lucene-index-pluginMaven |
4.0-rc1-1.0.0 up to 4.0.17-1.0.0 | 4.0.17-1.0.0 |
com.instaclustr:cassandra-lucene-index-pluginMaven |
4.1.0-1.0.0 up to 4.1.8-1.0.1 | 4.1.8-1.0.1 |
com.instaclustr:cassandra-lucene-index-pluginMaven |
4.0-rc1-1.0.0 up to 4.0.17-1.0.0, plus listed versions 4.0.0-1.0.0 |
4.0.17-1.0.0 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-02 | created | CVE List, EUVD, GitHub Advisories, NVD, OSV |
References
github.com/instaclustr/cassandra-lucene-index/security/advisories/GHSA-mrqp-q7vx-v2cx
nvd.nist.gov/vuln/detail/CVE-2025-26511