Medium severity · published Feb 24, 2026
CVE-2026-23969
Apache Superset: Exposure of Sensitive Information via Incomplete ClickHouse Function Filtering
6.5
CVSS
0.7%
EPSS
No
On KEV
Description
Apache Superset utilizes a configurable dictionary, DISALLOWED_SQL_FUNCTIONS, to restrict the execution of potentially sensitive SQL functions within SQL Lab and charts. While this feature included restrictions for engines like PostgreSQL, a vulnerability was reported where the default list for the ClickHouse engine was incomplete.
This issue affects Apache Superset: before 4.1.2.
Users are recommended to upgrade to version 4.1.2, which fixes the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Apache Superset · Apache Software Foundation
0.0.0 before 4.1.2 · source: vendor
SU
Superset · Apache
before 4.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23969
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23969
Mailing List
https://lists.apache.org/thread/2q22sp4oj3krcgdkxchhtht0vgwp2wnd
Mailing List
http://www.openwall.com/lists/oss-security/2026/02/24/4
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