CVE-2026-52680criticalCWE-22CWE-73

CVE-2026-52680: critical vulnerability in Apache Kyuubi

Apache Kyuubi: REST batch multipart upload path traversal allows controlled file write

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48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.8epss 1.1%
from disclosure to weapon5 days
Published on NVDJul 30
1st PoC+5d
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Apache Software Foundation · Apache Kyuubi
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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