by Kastro
Paper/Archive/CVE-2026-114403

CVE-2026-114403

PHPOffice PHPPresentation — PHPOffice PHPPresentation through 1.2.0 Deserialization via Reader\Serialized::load

EPSS 0.7%public exploitCVSS 9.2
critical.is priorityof 100
48
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 53.2.532 × 2010.6Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
PHPPresentation≤ 1.2.0–CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploithackmd.io/@leediay/multiple_vulnerable_phppresentationwriteupgithub.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Reader/Serialized.php#L77-L109writeupgithub.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/IOFactory.php#L39refgithub.com/PHPOffice/PHPPresentationwriteupvulncheck.com/advisories/phpoffice-phppresentation-through-1.2.0-deserialization-via-reader-serialized-load