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

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Message-ID: <ce7fbc40-401a-cb12-bad4-aa107e340bc4@apache.org>
Date: Fri, 19 Sep 2025 05:46:31 +0000
From: Chen Xia <casion@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2025-29847: Apache Linkis: Arbitrary File Read via Double URL
 Encoding Bypass 

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

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