Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/PHPOffice/PHPPresentation
- https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/IOFa
- https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Read
- https://hackmd.io/@leediay/multiple_vulnerable_phppresentation
- https://www.vulncheck.com/advisories/phpoffice-phppresentation-through-1.2.0-des
- https://hackmd.io/@leediay/multiple_vulnerable_phppresentation
FAQ
What is CVE-2026-114403?
CVE-2026-114403 is a vulnerability with a CVSS score of 8.1 (HIGH). 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. Attacker...
How severe is CVE-2026-114403?
CVE-2026-114403 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114403?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.