Cross-Site Scripting Vulnerability in PHPOffice PHPPresentation Software
CVE-2026-114404

5.3MEDIUM

Key Information:

Vendor

PHPoffice

Status
PHPpresentation
Vendor
CVE Published:
21 October 2026

What is CVE-2026-114404?

PHPOffice PHPPresentation version 1.2.0 is vulnerable to a cross-site scripting (XSS) issue stemming from the HTML writer component. This vulnerability allows attackers to inject malicious scripts by supplying specially crafted presentation files (PPTX). Specifically, manipulative modifications in text runs, hyperlink targets, or shape description attributes can lead to unescaped output in the generated HTML. Consequently, when opened in browsers, these presentations can execute harmful scripts, thereby posing significant risks to users' systems.

Affected Version(s)

PHPPresentation 1.2.0

References

https://hackmd.io/@leediay/multiple_vulnerable_phppresent...
third-party-advisory
https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/s...
technical-description
https://github.com/PHPOffice/PHPPresentation
product

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

leediay153 from Viettel Post
.