StarRocks up to 4.0.13 Legacy Synchronous Materialized View visitDropMaterializedViewStatement improper authorization

Summaryinfo

A vulnerability identified as problematic has been detected in StarRocks up to 4.0.13. Affected by this vulnerability is the function visitDropMaterializedViewStatement of the component Legacy Synchronous Materialized View. The manipulation leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-80346. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in StarRocks up to 4.0.13. It has been rated as problematic. This issue affects the function visitDropMaterializedViewStatement of the component Legacy Synchronous Materialized View. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is integrity, and availability. The summary by CVE is:

StarRocks performs no privilege check when a legacy synchronous materialized view is dropped. Every other statement type routed through AuthorizerStmtVisitor calls into Authorizer before execution, but visitDropMaterializedViewStatement returns immediately with a comment stating the check happens in execution logic. That holds only for asynchronous materialized views: LocalMetastore.dropMaterializedView calls Authorizer.checkMaterializedViewAction inside a branch taken when the resolved table is a MaterializedView. A legacy synchronous materialized view is stored as a rollup index on an OlapTable rather than a MaterializedView, so the other branch runs, reaching AlterJobMgr.processDropMaterializedView and MaterializedViewHandler, neither of which contains any Authorizer call. The former locates the target by scanning every OlapTable in the named database for a matching rollup index, and the latter validates only table state and name conflicts. Any authenticated account can therefore drop a legacy synchronous materialized view belonging to any database, holding no grant on the view, the base table or the database, and the drop is indistinguishable from an authorized one.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-80346 since 08/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/26/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

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-2026-66385). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• StarRocks

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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