CSRF in Contentmx Content Publisher
CVE-2025-9889
The ContentMX Content Publisher plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.6. This is due to missing or incorrect nonce validation on the cmx_activate_connection function. This makes it possible for unauthenticated attackers to bind their own ContentMX connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Vulnerability class: CSRF (Cross-Site Request Forgery)
EPSS: 0.002 (5.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
Affected products
- Contentmx Content Publisher — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-9889?
- CVE-2025-9889 is a medium-severity vulnerability in Contentmx Content Publisher, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2025-10-03.
- How severe is CVE-2025-9889?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2025-9889 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.