CVE-2023-0477

Name: CVE-2023-0477
Creator: NVD / NIST
Published: 2023-03-13T17:15:12.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.65%

Last modified Jun 17, 2026

CVE-2023-0477 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Auto Featured Image (Auto Post Thumbnail) WordPress plugin before 3.9.16 includes an AJAX endpoint that allows any user with at least Author privileges to upload arbitrary files, such as PHP files. This is caused by incorrect file extension validation.. EPSS estimates a 1.65% chance of exploitation in the next 30 days.

Description

The Auto Featured Image (Auto Post Thumbnail) WordPress plugin before 3.9.16 includes an AJAX endpoint that allows any user with at least Author privileges to upload arbitrary files, such as PHP files. This is caused by incorrect file extension validation.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.65%

73.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Cm-Wp	Auto Featured Image	< 3.9.16

References

https://wpscan.com/vulnerability/e5ef74a2-e04a-4a14-bd0e-d6910cd1c4b4Exploit, Third Party Advisory
https://wpscan.com/vulnerability/e5ef74a2-e04a-4a14-bd0e-d6910cd1c4b4Exploit, Third Party Advisory

Timeline

Published: Mar 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-0477?

How severe is CVE-2023-0477?

CVE-2023-0477 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.65% probability of exploitation in the next 30 days.

How do I fix CVE-2023-0477?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-0477?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST