Apache Linkis: Arbitrary File Read via Double URL Encoding Bypass
High7.5CVE-2025-29847 · Published Jan 19, 2026 · updated Feb 3, 2026
A vulnerability in Apache Linkis. Problem Description 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
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| org.apache.linkis:linkis Maven | >= 1.3.0, < 1.8.0 | 1.8.0 |
Details and references
More linkis advisories
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|---|---|---|---|
| Aug 22024 | Apache Linkis arbitrary file deletion vulnerability High4.9Aug 2, 2024 | High4.9 | 1.6.0 |
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| Mar 62024 | Apache Linkis DataSource: DataSource module Oracle SQL Database Password LoggedMedium5.3Mar 6, 2024 | Medium5.3 | 1.5.0 |
| Jul 62023 | Apache Linkis Authentication Bypass vulnerabilityCritical9.1Jul 6, 2023 | Critical9.1 | 1.3.2 |
| Jul 62023 | Apache Linkis Zip Slip issueCritical9.8Jul 6, 2023 | Critical9.8 | 1.3.2 |
| Jul 62023 | Apache Linkis Unrestricted File Upload vulnerabilityCritical9.8Jul 6, 2023 | Critical9.8 | 1.3.2 |