Regular Expression Denial of Service in Apache Superset
CVE-2026-23985

5.3MEDIUM

Key Information:

Vendor

Apache
Status
Apache Superset
Vendor
CVE Published:
30 July 2026

What is CVE-2026-23985?

A vulnerability in the SQL parsing component of Apache Superset allows authenticated attackers to exploit overlapping disjunctions in a regex. This can lead to Denial of Service (DoS) when a malicious input string, consisting of a long series of backslashes or similar characters, is processed. The issue is present in versions 1.5.0 through 5.0.0. It is advised to upgrade to version 6.0.0 for a resolution. Additionally, implementing Web Application Firewall (WAF) rules and strict rate limiting on specific endpoints can act as effective mitigations against this vulnerability.

Affected Version(s)

Apache Superset 0 < 6.0.0

References

https://lists.apache.org/thread/fdy7tx7glv90ypd7qnm1g1pt7...
vendor-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Trung Đức Lê
Beto de Almeida
.