CVE-2025-29847: Apache Linkis: Arbitrary File Read via Double URL Encoding Bypass

[Chen Xia <casion () apache org>]

Severity: moderate 

Affected versions:

- Apache Linkis 1.3.0 through 1.7.0

Description:

A vulnerability in Apache Linkis.

Problem Description
When using the JDBC engine and da
When using the JDBC engine and data source functionality, if the URL parameter configured on the frontend has undergone 
multiple rounds of URL encoding, it may bypass the system's checks. This bypass can trigger a vulnerability that allows 
unauthorized access to system files via JDBC parameters.

Scope of Impact


This issue affects Apache Linkis: from 1.3.0 through 1.7.0.

Severity level


moderate
Solution
Continuously check if the connection information contains the "%" character; if it does, perform URL decoding.

Users are recommended to upgrade to version 1.8.0, which fixes the issue.

Credit:

Le1a and A1kaid from Threatbook (finder)
kinghao (analyst)
Le1a from Threatbook (remediation developer)
kinghao (remediation reviewer)

References:

https://linkis.apache.org
https://www.cve.org/CVERecord?id=CVE-2025-29847