What is CVE-2023-3452?

CVE-2023-3452 is a critical-severity vulnerability in Canto, classified under PHP Remote File Inclusion. CVSS score: 9.8/10. Published 2023-08-12.

How severe is CVE-2023-3452?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-3452 known to be exploited?

9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Canto

CVE-2023-3452

The Canto plugin for WordPress is vulnerable to Remote File Inclusion in versions up to, and including, 3.0.4 via the 'wp_abspath' parameter. This allows unauthenticated attackers to include and execute arbitrary remote code on the server, provided that allow_url_include is enabled. Local File Inclusion is also possible, albeit less useful because it requires that the attacker be able to upload a malicious php file via FTP or some other means into a directory readable by the web server.

Published 2023-08-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.070 (93.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.070 · newest: 0.070 · change: 0.000

Affected products

Canto
Flightbycanto Canto — versions 0

Weakness classification (CWE)

CWE-98 — PHP Remote File Inclusion

Public proof-of-concept exploits

References

www.wordfence.com/threat-intel/vulnerabilities/id/a76077c6-700a-4d21-a930-b0d64… (Third Party Advisory)
plugins.trac.wordpress.org/browser/canto/trunk/includes/lib/tree.php (Third Party Advisory)
plugins.trac.wordpress.org/changeset/2951888/canto/trunk/includes/lib/tree.php (Patch)

Frequently asked questions

What is CVE-2023-3452?: CVE-2023-3452 is a critical-severity vulnerability in Canto, classified under PHP Remote File Inclusion. CVSS score: 9.8/10. Published 2023-08-12.
How severe is CVE-2023-3452?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-3452 known to be exploited?: 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.