TI-2026-79207 Aliases CVE-2026-112867 GHSA-px3h-x9p7-gjv8

Stored cross-site scripting in WordPress H5P plugin

LOW 28CWE-79Published 2026-10-22 · Updated 2026-10-22

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The H5P plugin for WordPress is affected through 1.17.9. Improper neutralization of input during web page generation allows stored cross-site scripting (CWE-79). An attacker with low privileges can store script that runs in another user's browser after that user interacts with the page, and the attack changes scope with a low impact on confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in H5P H5P h5p allows Stored XSS.This issue affects H5P: from n/a through 1.17.9.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0017 6th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
H5P	H5P	up to 1.17.9	—	No fix listed	CNA

H5P VendorH5P Affected up to 1.17.9 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for H5P.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-22 Threatist record created from CVE-2026-112867
2026-10-22 Alias added: GHSA-px3h-x9p7-gjv8
2026-10-22 CISA SSVC decision points changed
2026-10-22 Priority changed: MEDIUM → LOW

References

Other 1

https://patchstack.com/database/wordpress/plugin/h5p/vulnerability/wordpress-h5p-plugin-1-17-9-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2024-02913 H5P < 1.15.8 - Contributor+ Stored XSS CVSS 3.1HIGH 7.1
TI-2026-40401 WordPress H5P plugin <= 1.17.6 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
TI-2026-78922 Authorization bypass in WordPress H5P plugin CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences