CVE-2025-29847

Apache Linkis: Arbitrary File Read via Double URL Encoding Bypass

Published Jan 19, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-c399-q49h-qwc8 Apache Linkis: Arbitrary File Read via Double URL Encoding Bypass
History
Type Values Removed Values Added
CPEs cpe:2.3:a:apache:linkis:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Apache
Apache linkis
Vendors & Products Apache
Apache linkis
Type Values Removed Values Added
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
Title Apache Linkis: Arbitrary File Read via Double URL Encoding Bypass
Weaknesses CWE-20
CWE-22
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
Jan 20, 2026, 3:12 PM
Reserved
Mar 12, 2025, 3:28 AM
Status
Analyzed
Published
Jan 19, 2026, 9:16 AM
Modified
Jun 17, 2026, 9:05 AM