CVE-2023-6938: oxygen XSS — Fix

Description

The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all versions up to, and including, 4.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: Version 4.8.1 of the Oxygen Builder plugin for WordPress addresses this vulnerability by implementing an optional filter to provide output escaping for dynamic data. Please see https://oxygenbuilder.com/documentation/other/security/#filtering-dynamic-data for more details.

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CVSS v3.1 Score

6.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
soflyy	oxygen	< 4.8.1

References

Advisories & Patches

https://oxygenbuilder.com/oxygen-4-8-1-now-available/ https://www.wordfence.com/threat-intel/vulnerabilities/id/ee069cb3-370e-48ea-aa35-c30fe83c2498?source=cve https://oxygenbuilder.com/oxygen-4-8-1-now-available/ https://www.wordfence.com/threat-intel/vulnerabilities/id/ee069cb3-370e-48ea-aa35-c30fe83c2498?source=cve

Frequently Asked Questions

What is CVE-2023-6938? +

The Oxygen Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via a custom field in all versions up to, and including, 4.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. NOTE: Version 4.8.1 of the Oxygen Builder plugin for WordPress addresses this vulnerability by implementing an optional filter to provide output escaping for dynamic data. Please see https://oxygenbuilder.com/documentation/other/security/#filtering-dynamic-data for more details. It has a CVSS v3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2023-6938? +

CVE-2023-6938 has a CVSS v3.1 score of 6.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-6938? +

CVE-2023-6938 affects products from soflyy, specifically: oxygen. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6938? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-6938