CVE-2026-84048Network attack vector

Unauthenticated arbitrary upload through exposed TUS endpoint

Published Sep 15, 2026 · Updated Sep 15, 2026

Arbitrary file upload in JoomGallery before 4.4.1 allows remote attackers to place attacker-supplied files through its TUS endpoint. The unauthenticated endpoint accepts arbitrary file contents, although it does not give the requester control of the stored filename or extension. File placement is the direct consequence; code execution additionally requires a non-standard server configuration.

CVSS severityUnavailable
Unscored
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in JoomGallery before 4.4.1 allows remote attackers to place attacker-supplied files through its TUS endpoint. The unauthenticated endpoint accepts arbitrary file contents, although it does not give the requester control of the stored filename or extension. File placement is the direct consequence; code execution additionally requires a non-standard server configuration.

The record

CVE
CVE-2026-84048
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
JoomGallery friends
Product
JoomGallery
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 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=4.0.0-4.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JoomGallery friends · JoomGalleryversion=4.0.0-4.4.1

Published CVSS scores

No CVSS assessment is available in this record.

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 exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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