CVSS 3.1
4.8 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NCVE-2021-39356
Medium (4.8) in content staging project content staging. EPSS 1.0% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- content_staging_project:content_staging
References
- https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.md
- https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settings.php
- https://wordfence.com/vulnerability-advisories/#CVE-2021-39356
- https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.md
- https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settings.php