Quick answers
- Is CVE-2025-66150 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-66150 being exploited in the wild.
- How severe is CVE-2025-66150?
- Medium severity, with a CVSS score of 5.4, published 31 December 2025.
- Which products and versions are affected?
- Merkulove Appender <= 1.1.1.
- Is there a fix for CVE-2025-66150?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2025-66150 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2025-66150?
- Check whether you run Merkulove Appender at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The Appender WordPress plugin version 1.1.1 and earlier contains a broken access control vulnerability (CWE-284) where authorization checks are either missing or incorrectly configured. An attacker with Subscriber-level privileges can exploit this to access pages, perform administrative actions, or view data that should be restricted to higher privilege levels. The vulnerability is network-accessible via the WordPress front-end and requires only a standard user account to exploit. No official patch is currently available as of the disclosure date.
Affected products
- Merkulove Appender <= 1.1.1
Timeline
- 2025-11-10: disclosed: Reported by Phat RiO
- 2025-12-31: advisory: Published by Patchstack