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Fabrik EUVDEUVD-2026-64319

| CVE-2026-76607 CRITICAL
Improper Access Control (CWE-284)
2026-08-22 Joomla GHSA-9r4g-3fgh-v3g8
Authentication Bypass Fabrik Extension For Joomla
10.0
CVSS 4.0 · Vendor: Joomla
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Severity by source

Vendor (Joomla) PRIMARY
10.0 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.5 HIGH

Unauthenticated network access to an unprotected download element yields file disclosure, so PR:N/AC:L with C:H; no evidence of integrity or availability impact.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Joomla).

CVSS VectorVendor: Joomla

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 22, 2026 - 15:13 vuln.today
CVE Published
Aug 22, 2026 - 14:15 cve.org
CRITICAL 10.0

DescriptionCVE.org

Joomla Extension - fabrikar.com - Missing ACL check in download element in Fabrik < 4.7.3 - ???.

AnalysisAI

Broken access control in the Fabrik application-builder extension for Joomla (all versions from 1.0.0 through releases prior to 4.7.3) exposes the download element without enforcing ACL checks, letting remote attackers retrieve files that should be restricted to privileged users. The flaw is remotely reachable over the network with no authentication or user interaction (CVSS vector PR:N/UI:N) and is tagged as an authentication bypass. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify Joomla site running Fabrik < 4.7.3
Delivery
Locate download element endpoint
Exploit
Request protected file without authorization
Execution
ACL check absent, file returned
Impact
Exfiltrate restricted data
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Vulnerability AssessmentAI

Exploitation Requires that the target Joomla site has the Fabrik extension installed at a version below 4.7.3 AND uses Fabrik's download element to serve files that are meant to be access-restricted. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The input assigns a maximal CVSS 4.0 score of 10.0 (AV:N/AC:L/AT:N/PR:N/UI:N with full High vulnerable- AND subsequent-system impact), which appears inflated for a missing-ACL flaw in a download element: the concrete described behavior is unauthorized file retrieval, which is primarily a confidentiality impact, so the High integrity/availability and subsequent-system (SC/SI/SA:H) metrics are not substantiated by the description - treat the 10.0 as a worst-case reporter rating and verify actual impact with the vendor. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker enumerates a public Joomla site running Fabrik, then requests a download-element URL that serves a file intended only for logged-in or privileged users; because the ACL check is missing, the server returns the protected file. Repeating this against known element/record identifiers lets the attacker harvest restricted documents at scale. …
Remediation Vendor-released patch: 4.7.3 - upgrade the Fabrik extension to 4.7.3 or later on all Joomla installations, as this is the version that introduces the missing ACL enforcement on the download element. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, disable the Fabrik download element in all production environments or implement firewall and WAF rules to block access to Fabrik file download paths if the extension cannot be immediately disabled. …

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EUVD-2026-64319 vulnerability details – vuln.today
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