blogsafe.org My Downloads

BlogSafe.org

WordPress CVEs

Search and review WordPress-related vulnerability records.

← Back to CVE list

CVE-2021-39343

MEDIUM 4.8 CVSS 3.1
Published
October 19, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Description

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.

Affected WordPress components

  • MPL-Publisher — Ebook & Audiobook Creator Plugin · mpl-publisher
    Confirmed match Active
    From 1.30.2 (including) to 1.30.2 (including); Up to and including 1.30.2
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • MPL-Publisher MPL-Publisher — From 1.30.2 (including) to 1.30.2 (including)
  • mpl-publisher mpl-publisher — Up to and including 1.30.2

References

  • github.com https://github.com/BigTiger2020/word-press/blob/main/MPL-Publisher.md Exploit, Third Party Advisory
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/mpl-publisher/trunk/libs/PublisherController.php#L35 Exploit, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39343 Third Party Advisory
  • nvd.nist.gov Official NVD record