CVE-2026-40899 DataEase has an Arbitrary File Read Vulnerability
An authenticated attacker can bypass JDBC blocklists to read arbitrary files from the server filesystem via a rogue MySQL connection.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40899?
CVE-2026-40899 is a high-severity path traversal vulnerability in Dataease Dataease, published on 16 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
DataEase is an open-source data visualization and analytics platform. Versions 2.10.20 and below contain a JDBC parameter blocklist bypass vulnerability in the MySQL datasource configuration. The Mysql class uses Lombok's @Data annotation, which auto-generates a public setter for the illegalParameters field that contains the JDBC security blocklist. When a datasource configuration is submitted as JSON, Jackson deserialization calls setIllegalParameters with an attacker-supplied empty list, replacing the blocklist before getJdbc() validation runs. This allows an authenticated attacker to include dangerous JDBC parameters such as allowLoadLocalInfile=true, and by pointing the datasource at a rogue MySQL server, exploit the LOAD DATA LOCAL INFILE protocol feature to read arbitrary files from the DataEase server filesystem, including sensitive environment variables and database credentials. This issue has been fixed in version 2.10.21.
Weakness: CWE-183
Which versions are affected by CVE-2026-40899?
It affects 1 product.
Products include Dataease Dataease.
How do I fix CVE-2026-40899?
No fix has been published for CVE-2026-40899 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-40899 being exploited?
There is no known exploitation of CVE-2026-40899 in the wild and no public exploit code.
Other vulnerabilities in Dataease Dataease
- CVE-2024-57707 Code injection in n/a
- CVE-2024-46997 DataEase's H2 datasource has a remote command execution risk
- CVE-2023-33963 DataEase data source has deserialization vulnerability
- CVE-2023-28437 SQL injection vulnerability due to the keyword blacklist for defending against SQL injection will be bypassed
- CVE-2022-39312 Dataease Mysql Data Source JDBC Connection Parameters Not Verified Leads to Deserialization Vulnerability
Sources
Also known as GHSA-944x-93jf-h3rx.