CVE-2026-114403
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductPHPPresentation
PublishedOct 21, 2026
First seenOct 21, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| PHPOffice PHPPresentation | v ≤ 1.2.0 | — |
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