CVSS 3.1
4.8 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NCVE-2021-39343
Medium (4.8) in mpl-publisher mpl-publisher. EPSS 1.0% chance of exploitation in the next 30 days.
The MPL-Publisher WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/libs/PublisherController.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 1.30.2. 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 63% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mpl-publisher:mpl-publisher
References
- https://github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.md
- https://plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.php#L35
- https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39343
- https://github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.md
- https://plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.php#L35