Apache Kyuubi up to 1.11.1 REST batch upload handling path traversal

Summaryinfo

A vulnerability has been found in Apache Kyuubi up to 1.11.1 and classified as critical. This vulnerability affects unknown code of the component REST batch upload handling. Performing a manipulation results in path traversal. This vulnerability is cataloged as CVE-2026-52680. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Apache Kyuubi up to 1.11.1. This affects an unknown part of the component REST batch upload handling. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Apache Kyuubi REST batch multipart upload handling uses the client-supplied multipart filename when creating a temporary uploaded resource. A remote attacker who can access the REST batch upload endpoint can provide path traversal sequences in the filename and cause the Kyuubi server process to write controlled content outside the intended upload directory, subject to filesystem permissions. This issue affects Apache Kyuubi: from 1.7.0 through 1.11.1. Users are recommended to upgrade to version 1.12.0, which fixes the issue.

The advisory is shared at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-52680 since 06/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/30/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.12.0 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Kyuubi

Version

• 1.11.0
• 1.11.1

License

• open-source

Website

• Vendor: https://www.apache.org/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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