CVE-2026-52680Public exploitNetwork attack vectorHinoki check available

Controlled file write via multipart filename traversal

Published Jul 30, 2026 · Updated Jul 30, 2026

Path traversal in Apache Kyuubi 1.7.0 through 1.11.1 allows remote attackers to write controlled files through REST batch uploads. Multipart upload handling passes the client-supplied filename into temporary-resource creation without constraining the resolved path to the upload directory. Access to the REST batch upload endpoint is required, and writes are limited to locations permitted to the Kyuubi server process.

CVSS severity9.8
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in Apache Kyuubi 1.7.0 through 1.11.1 allows remote attackers to write controlled files through REST batch uploads. Multipart upload handling passes the client-supplied filename into temporary-resource creation without constraining the resolved path to the upload directory. Access to the REST batch upload endpoint is required, and writes are limited to locations permitted to the Kyuubi server process.

The record

CVE
CVE-2026-52680
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
The Apache Software Foundation
Product
Apache Kyuubi
Classifications
CWE-73, CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.7.0 <=1.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Kyuubiversion=1.7.0 <=1.11.1

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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