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Gibbon CVE-2026-8209

| EUVD-2026-28899 MEDIUM
Relative Path Traversal (CWE-23)
2026-05-09 ab69c47f-b95e-4bf2-b2d9-4b1fd1b24b4a GHSA-f8qc-g9ff-p4m7
PHP Path Traversal
6.9
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/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
High
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
May 09, 2026 - 05:01 EUVD
Source Code Evidence Fetched
May 09, 2026 - 04:30 vuln.today
Analysis Generated
May 09, 2026 - 04:30 vuln.today
CVE Published
May 09, 2026 - 04:16 nvd
MEDIUM 6.9

DescriptionNVD

Gibbon versions before v30.0.01 are affected by a path traversal vulnerability resulting in DOS by attempting extraction of web application PHP files, failed .zip extraction results in deletion of the file and a DOS condition. Successful exploitation requires Teacher or higher privileges. Exploitation could result in loss of availability of the web application.

AnalysisAI

Denial of service in Gibbon versions before v30.0.01 via path traversal during ZIP file extraction allows authenticated users with Teacher or higher privileges to trigger file deletion and application unavailability. The vulnerability exploits improper handling of malicious ZIP archives, where failed extraction attempts result in unintended deletion of PHP application files. …

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CVE-2026-8209 vulnerability details – vuln.today
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