CVE-2026-114403 PHPOffice PHPPresentation - Insecure Deserialization

PHPOffice PHPPresentation through 1.2.0 contains an insecure deserialization vulnerability caused by unserialize() usage in IOFactory::load with crafted presentation files, letting attackers execute code, write files, or cause denial of service, exploit requires crafted ZIP upload.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Insecure Deserialization
Impact
Remote Code Execution, File System Write, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
21 October 2026
Updated
22 October 2026
Weakness
CWE-502

Vendor fix

Update to the latest version beyond 1.2.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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