H5P CSS Editor <= 1.0 - Reflected Cross-Site Scripting

2021-12-13 00:00

p7e4

Strategic Overview

Status

Unpatched

Affected PluginH5P CSS Editor

Affected Version<= 1.0

CVSS6.1Medium

CVECVE-2021-39318

View all H5P CSS Editor vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-39318 https://www.wordfence.com/threat-intel/vulnerabilities/id/35b013c1-1574-4d5b-a3cb-e400ef7f2d32

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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