CVE-2021-39318

H5P CSS Editor <= 1.0 Reflected Cross-Site Scripting

State: Published
Severity: 6.1 Medium
Published: Dec 14, 2021
Updated: Feb 13, 2025
Reserved: Aug 20, 2021

Description

The H5P CSS Editor WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the h5p-css-file parameter found in the ~/h5p-css-editor.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.0.

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	Wordfence

Weaknesses

CWE-79 Cross-site Scripting (XSS)

Affected Products

Product	Versions
H5P CSS EditorH5P CSS Editor	1.0 through 1.0Affected

References

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39318
https://plugins.trac.wordpress.org/browser/h5p-css-editor/tags/1.0/h5p-css-editor.php#L50

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