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CVE-2026-52680

Apache Kyuubi path traversal

9.8 CRITICALEPSS 1.11%
  1. Published30 Jul 2026

Description

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 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Kyuubi≥ 1.7.0 < 1.12.0

Remediation

Fixed in
Apache Kyuubi≥ 1.12.0

References

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Frequently asked

Is CVE-2026-52680 being actively exploited?

CVE-2026-52680 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.11%.

How severe is CVE-2026-52680?

CVE-2026-52680 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.11% probability of exploitation.

Which products are affected by CVE-2026-52680?

Affected products include Apache Kyuubi.

How do I fix CVE-2026-52680?

Upgrade affected software to a fixed version, for example Apache Kyuubi 1.12.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-52680 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.