Vulnerability · Published Oct 21, 2021 · Assigned by Wordfence

CVE-2021-39356Content Staging <= 2.0.1 Authenticated Stored Cross-Site Scripting

Medium 5.5

In plain English

A medium-severity cross-site scripting in Content Staging from Content Staging. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)1.0%top 37.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Content Staging	Content Staging	2.0.1 – through 2.0.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

References

https://plugins.trac.wordpress.org/browser/content-staging/trunk/templates/settings.php x_refsource_MISC
https://wordfence.com/vulnerability-advisories/#CVE-2021-39356 x_refsource_MISC
https://github.com/BigTiger2020/word-press/blob/main/Content%20Staging.md x_refsource_MISC