PHPOffice PHPPresentation up to 1.2.0 Presentation File PhpPresentation.xml IOFactory::load deserialization

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k1.66

Summaryinfo

A vulnerability identified as critical has been detected in PHPOffice PHPPresentation up to 1.2.0. The impacted element is the function IOFactory::load of the file PhpPresentation.xml of the component Presentation File Handler. This manipulation causes deserialization. This vulnerability appears as CVE-2026-114403. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in PHPOffice PHPPresentation up to 1.2.0. Affected by this vulnerability is the function IOFactory::load of the file PhpPresentation.xml of the component Presentation File Handler. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at hackmd.io. This vulnerability is known as CVE-2026-114403 since 10/21/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/21/2026).

By approaching the search of inurl:PhpPresentation.xml it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/21/2026 Advisory disclosed
10/21/2026 +0 days CVE reserved
10/21/2026 +0 days VulDB entry created
10/21/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: hackmd.io
Status: Not defined

CVE: CVE-2026-114403 (🔒)
GCVE (CVE): GCVE-0-2026-114403
GCVE (VulDB): GCVE-100-424783

Entryinfo

Created: 10/21/2026 14:58
Changes: 10/21/2026 14:58 (75)
Complete: 🔍
Cache ID: 216::103

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