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CVE-2026-114403 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.1 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://hackmd.io/@leediay/multiple_vulnerable_phppresentation	CISA-ADP
https://github.com/PHPOffice/PHPPresentation	[email protected]
https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/IOFactory.php#L39	[email protected]
https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Reader/Serialized.php#L77-L109	[email protected]
https://hackmd.io/@leediay/multiple_vulnerable_phppresentation	[email protected]
https://www.vulncheck.com/advisories/phpoffice-phppresentation-through-1.2.0-deserialization-via-reader-serialized-load	[email protected]

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-502	Deserialization of Untrusted Data	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 28, 2026	CVE Modified	CISA-ADP
Oct 21, 2026	New CVE Received	[email protected]