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CVE-2026-114403

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

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.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Vendors
Phpoffice
Products
Phppresentation
CVE-2026-114404

PHPPresentation 1.2.0 XSS via Writer\HTML Text Runs, Hyperlinks and Descriptions

PHPOffice PHPPresentation 1.2.0 contains a cross-site scripting vulnerability in the HTML writer that allows attackers who supply presentation content to inject script into generated HTML. Attackers can craft a PPTX with malicious text runs, hyperlink relationship targets, or shape descr attributes that are emitted unescaped, executing script in viewers' browsers.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Phpoffice
Products
Phppresentation