CVE-2026-55633Public exploitNetwork attack vector

Authenticated RCE via disguised font archive

Published Jul 7, 2026 · Updated Jul 7, 2026

Unrestricted file upload in DataEase before 2.10.24 allows remote authenticated users to execute code through the H2 zip protocol. FontManage.saveFile accepts any multipart content when its filename ends in .ttf and writes the bytes directly into the server's font directory. A valid DataEase session is required to upload the disguised ZIP archive; its resulting absolute path can then be supplied to H2 to run code on the server.

CVSS severity8.7
High
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in DataEase before 2.10.24 allows remote authenticated users to execute code through the H2 zip protocol. FontManage.saveFile accepts any multipart content when its filename ends in .ttf and writes the bytes directly into the server's font directory. A valid DataEase session is required to upload the disguised ZIP archive; its resulting absolute path can then be supplied to H2 to run code on the server.

The record

CVE
CVE-2026-55633
Published
Jul 7, 2026
Updated
Jul 7, 2026
Vendor
KubeOperator
Product
DataEase
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 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=< 2.10.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

KubeOperator · DataEaseversion=< 2.10.24

Published CVSS scores

8.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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