High 8.1Published Oct 21, 2026

CVE-2026-114403PHPOffice PHPPresentation through 1.2.0 Deserialization via Reader\Serialized::load

Updated under an hour ago (Oct 27, 2026, 4:50 AM ET)

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It affects PHPOffice PHPPresentation. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.48%, higher than 41% of scored CVEs.

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Every CVE for PHPOffice PHPPresentation

Exploited in the last 30 days

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: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.48% (percentile 41)
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 21, 2026

Affected products

Affected products

PHPOffice PHPPresentation phpoffice:phppresentation (from the name)	through 1.2.0	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.