Apache Superset up to 5.0.0 SQL Parsing sql_parse.py queries.extras.where redos

Summaryinfo

A vulnerability was found in Apache Superset up to 5.0.0 and classified as problematic. This issue affects some unknown processing of the file sql_parse.py of the component SQL Parsing. Executing a manipulation of the argument queries.extras.where can lead to redos. This vulnerability is registered as CVE-2026-23985. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Apache Superset up to 5.0.0. This vulnerability affects an unknown code of the file sql_parse.py of the component SQL Parsing. The manipulation of the argument queries.extras.where with an unknown input leads to a redos vulnerability. The CWE definition for the vulnerability is CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. As an impact it is known to affect availability. CVE summarizes:

A Regular Expression Denial of Service (ReDoS) vulnerability exists in Apache Superset versions 1.5.0 through 5.0.0. The vulnerability is located in the sql_parse.py component, specifically within the SQL_REGEX used for parsing SQL statements in the sqlparse library integration. The affected regular expression contains overlapping disjunctions that share a common outer quantifier. An authenticated attacker can exploit this by sending a maliciously crafted input string (specifically a long sequence of backslashes or similar characters) to endpoints that process SQL queries This issue affects Apache Superset: before 6.0.0. Users are recommended to upgrade to version 6.0.0, which fixes the issue.  Workarounds: ● WAF Rules: Implement Web Application Firewall (WAF) rules to detect and block requests containing excessively long sequences of backslashes or suspicious repeated patterns in the queries.extras.where parameter. ● Rate Limiting: Ensure strict rate limiting is applied to the /api/v1/chart/data endpoint to reduce the impact of potential attacks.

The advisory is available at lists.apache.org. This vulnerability was named CVE-2026-23985 since 01/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/30/2026). This vulnerability is assigned to T1449.003 by the MITRE ATT&CK project.

Upgrading to version 6.0.0 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Superset

Version

• 5.0

License

• open-source

Website

• Vendor: https://www.apache.org/

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