RCE in Watchman-Site7

CVE-2026-77009

The WatchMan-Site7 WordPress plugin through 4.2.0 does not restrict access to its debugging console, which executes user-supplied PHP code, allowing any authenticated user, such as a subscriber, to run arbitrary code on the server.

Vulnerability class: RCE (Remote Code Execution)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (42.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-77009: held from 0.003 to 0.005.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

  • Watchman-Site7

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-77009?
CVE-2026-77009 is a critical-severity vulnerability in Watchman-Site7, classified under Code Injection. CVSS score: 9.9/10. Published 2026-09-02.
How severe is CVE-2026-77009?
Critical severity. CVSS v3 base score is 9.9 out of 10.