WordPress H5P plugin <= 1.17.6 - Reflected Cross Site Scripting (XSS) vulnerability

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Summary

CVECVE-2026-56006
StatePUBLISHED
AssignerPatchstack
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 14:16:50 UTC
Updated2026-06-25 15:16:39 UTC
DescriptionUnauthenticated Cross Site Scripting (XSS) in H5P <= 1.17.6 versions.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
3.1CNACVSS7.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA H5P H5P affected n/a 1.17.6 custom Not specified

References

ReferenceSourceLinkTags
patchstack.com/database/wordpress/plugin/h5p/vulnerability/wordpress-h5p-plu... [email protected] patchstack.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Koutrouss Naddara | Patchstack Bug Bounty Program (en)

Additional Advisory Data

Solutions

CNA: Update the WordPress H5P Plugin to the latest available version (at least 1.17.7).

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