CVE-2025-29847

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

Vendor Apache Software Foundation
Product Apache Linkis
Weakness CWE-20 · Input validation
Published January 19, 2026
Last update January 20, 2026

CVSS base score

What the vulnerability does

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. More questions about this vulnerability can be discussed here:  https://lists.apache.org/list?dev@linkis.apache.org:2025-9:cve

Key dates

Disclosure timeline

January 19, 2026 CVE published
January 20, 2026 Record updated