RCE in Psauxit nginx Cache Purge Preload

CVE-2025-6213

The Nginx Cache Purge Preload plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.1.1 via the 'nppp_preload_cache_on_update' function. This is due to insufficient sanitization of the $_SERVER['HTTP_REFERERER'] parameter passed from the 'nppp_handle_fastcgi_cache_actions_admin_bar' function. This makes it possible for authenticated attackers, with Administrator-level access and above, to execute code on the server.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.007 (48.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-6213?
CVE-2025-6213 is a high-severity vulnerability in Psauxit nginx Cache Purge Preload, classified under Code Injection. CVSS score: 7.2/10. Published 2025-07-22.
How severe is CVE-2025-6213?
High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2025-6213 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.