CVE-2026-76597Network attack vector

Unauthenticated file upload via unchecked list email controller

Published Aug 22, 2026 · Updated Aug 22, 2026

Improper access control in Fabrik 1.0.0 through 4.7.1 allows remote attackers to upload non-executable files to the web root. The list email plugin controller accepts file-upload requests and writes their contents beneath the web root without authenticating or authorizing the requester. A network-reachable Joomla site with the Fabrik list email plugin exposed is sufficient; the published impact is arbitrary file placement, not code execution.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Fabrik 1.0.0 through 4.7.1 allows remote attackers to upload non-executable files to the web root. The list email plugin controller accepts file-upload requests and writes their contents beneath the web root without authenticating or authorizing the requester. A network-reachable Joomla site with the Fabrik list email plugin exposed is sufficient; the published impact is arbitrary file placement, not code execution.

The record

CVE
CVE-2026-76597
Published
Aug 22, 2026
Updated
Aug 22, 2026
Vendor
Team Fabrik
Product
Fabrik
Classifications
CWE-284, T1105
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 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=1.0.0-4.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Team Fabrik · Fabrikversion=1.0.0-4.7.1

Published CVSS scores

8.7JoomlaCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1105Ingress Tool Transfer

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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