by Kastro
Paper/Archive/CVE-2026-52680

CVE-2026-52680

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

EPSS 1%CVSS 9.8
critical.is priorityof 100
43
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 65.9.659 × 2013.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Apache Kyuubi1.7.0 – 1.11.1–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/b0qx2v8k5v4rrqsh53pb146t7so0lmrkrefopenwall.com/lists/oss-security/2026/07/30/5