CRITICAL 9.2 NVD
CVE-2026-114403
PHPOffice PHPPresentation through 1.2.0 contains an insecure deserialization vulnerability that allows attackers to instantiate arbitrary PHP objects by supplyi
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.
References
- https://github.com/PHPOffice/PHPPresentation
- https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/IOFactory.php#
- https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Reader/Seriali
- https://hackmd.io/@leediay/multiple_vulnerable_phppresentation
- https://www.vulncheck.com/advisories/phpoffice-phppresentation-through-1.2.0-deserializati
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-10-21 via NVD.
Risk Timeline
CVE Disclosed2026-10-21 · -1 days ago
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