Vulnerability Description
The Content Staging WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via several parameters that are echo'd out via the ~/templates/settings.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.0.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Content Staging Project | Content Staging | <= 2.0.1 |
Related Weaknesses (CWE)
References
- https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.mdExploitThird Party Advisory
- https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settiThird Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39356Third Party Advisory
- https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.mdExploitThird Party Advisory
- https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settiThird Party Advisory
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39356Third Party Advisory
FAQ
What is CVE-2021-39356?
CVE-2021-39356 is a vulnerability with a CVSS score of 5.5 (MEDIUM). The Content Staging WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and escaping via several parameters that are echo'd out via the ~/templates/setti...
How severe is CVE-2021-39356?
CVE-2021-39356 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-39356?
Check the references section above for vendor advisories and patch information. Affected products include: Content Staging Project Content Staging.