CVE-2026-114403

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 v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/PHPOffice/PHPPresentation
https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/IOFactory.php#L39
https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Reader/Serialized.php#L77-L109
https://hackmd.io/@leediay/multiple_vulnerable_phppresentation
https://www.vulncheck.com/advisories/phpoffice-phppresentation-through-1.2.0-deserialization-via-reader-serialized-load
https://hackmd.io/@leediay/multiple_vulnerable_phppresentation

Configurations

No configuration.

History

28 Oct 2026, 17:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@leediay/multiple_vulnerable_phppresentation -~~	() https://hackmd.io/@leediay/multiple_vulnerable_phppresentation -

21 Oct 2026, 13:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 13:18

Updated : 2026-10-28 17:17

NVD link : CVE-2026-114403

Mitre link : CVE-2026-114403

CVE.ORG link : CVE-2026-114403

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

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