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.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_misc
https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settings.php
Third Party Advisory x_refsource_misc
https://wordfence.com/vulnerability-advisories/#CVE-2021-39356
Exploit, Third Party Advisory x_refsource_misc
https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.md
Scores
CVSS v3
5.5
EPSS
0.0083
EPSS Percentile
74.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
content_staging_project/content_staging
< 2.0.1
Published
Oct 21, 2021
Tracked Since
Feb 18, 2026