CVE-2026-114403

PHPOffice PHPPresentation through 1.2.0 Deserialization via Reader\Serialized::load

Published Oct 21, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Description
PHPOffice PHPPresentation through 1.2.0 contains an insecure deserialization vulnerability that allows attackers to instantiate arbitrary PHP objects by supplying a crafted presentation file. Attackers can upload a ZIP containing PhpPresentation.xml that IOFactory::load passes to unserialize(), enabling gadget-chain code execution, file writes, or denial of service.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Phpoffice
Phpoffice phppresentation
Vendors & Products Phpoffice
Phpoffice phppresentation
Type Values Removed Values Added
Description PHPOffice PHPPresentation through 1.2.0 contains an insecure deserialization vulnerability that allows attackers to instantiate arbitrary PHP objects by supplying a crafted presentation file. Attackers can upload a ZIP containing PhpPresentation.xml that IOFactory::load passes to unserialize(), enabling gadget-chain code execution, file writes, or denial of service.
Title PHPOffice PHPPresentation through 1.2.0 Deserialization via Reader\Serialized::load
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 28, 2026, 4:31 PM
Reserved
Oct 21, 2026, 11:46 AM
Status
Awaiting Analysis
Published
Oct 21, 2026, 1:18 PM
Modified
Oct 28, 2026, 5:17 PM