What is CVE-2026-114404?

CVE-2026-114404 is a medium-severity vulnerability in Phpoffice Phppresentation, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-10-21.

How severe is CVE-2026-114404?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Phpoffice Phppresentation

CVE-2026-114404

PHPOffice PHPPresentation 1.2.0 contains a cross-site scripting vulnerability in the HTML writer that allows attackers who supply presentation content to inject script into generated HTML. Attackers can craft a PPTX with malicious text runs, hyperlink relationship targets, or shape descr attributes that are emitted unescaped, executing script in viewers' browsers.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-21 · last modified 2026-10-21.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Phpoffice Phppresentation

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

hackmd.io/@leediay/multiple_vulnerable_phppresentation (third-party-advisory)
github.com/PHPOffice/PHPPresentation/blob/1.2.0/src/PhpPresentation/Writer/HTML… (technical-description)
github.com/PHPOffice/PHPPresentation (product)
www.vulncheck.com/advisories/phppresentation-1.2.0-xss-via-writer-html-text-run… (third-party-advisory)

Frequently asked questions

What is CVE-2026-114404?: CVE-2026-114404 is a medium-severity vulnerability in Phpoffice Phppresentation, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-10-21.
How severe is CVE-2026-114404?: Medium severity. CVSS v3 base score is 6.1 out of 10.