# CVE-2026-114404: PHPOffice PHPPresentation cross-site scripting in HTML writer

Source: https://junglewise.ai/threats/cve-2026-114404-phpoffice-phppresentation-1-2-0-contains-a-cross-site-scripting  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-114404 · Severity: medium · CVSS 6.1 · Published 2026-10-21

PHPPresentation is a PHP library that reads and writes presentation files (such as PPTX). The HTML writer component fails to escape user-controlled content when converting presentations to HTML, allowing attackers to inject malicious scripts. An attacker could craft a malicious presentation file that, when converted to HTML and viewed in a browser, executes arbitrary JavaScript in the viewer's session.

Vendors: [Phpoffice](https://junglewise.ai/threats/vendors/phpoffice).

## Quick answers

**Is CVE-2026-114404 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-114404 being exploited in the wild.

**How severe is CVE-2026-114404?** Medium severity, with a CVSS score of 6.1, published 21 October 2026.

**Which products and versions are affected?** Phpoffice PHPPresentation 1.2.0.

**Is there a fix for CVE-2026-114404?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-114404 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-114404?** Check whether you run Phpoffice PHPPresentation at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The HTML writer in PHPPresentation 1.2.0 fails to properly escape text runs, hyperlink targets, and shape description attributes when emitting HTML output, resulting in reflected cross-site scripting. An attacker can craft a PPTX file with malicious content that gets written unescaped to the generated HTML. This requires the attacker to supply the presentation file and the victim to view the HTML output, but no authentication is required.

## Affected products

- PHPOffice PHPPresentation 1.2.0

## Timeline

- 2026-10-21: disclosed

## References

- [https://github.com/PHPOffice/PHPPresentation](https://github.com/PHPOffice/PHPPresentation)
- [https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Writer/HTML.php](https://github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Writer/HTML.php)

## Related threats

- [PHPOffice PHPPresentation insecure deserialization](https://junglewise.ai/threats/cve-2026-114403-phpoffice-phppresentation-through-1-2-0-contains-an-insecure)