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Public proof of conceptFix available

CVE-2023-0477

A public proof of concept exists; no exploitation attested.

  • Published2023-03-13
  • Fixed in3.9.16
  • WeaknessCWE-434

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2023-03-1317:15CVE publishedNVD

Versions per branch

NVD
Cm-wp auto featured image
BranchAffectedFixed in
3.9< 3.9.163.9.16

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As WPScan, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-03-13

Fix

  1. Update Cm-wp auto featured image to 3.9.16

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2023-03-13
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-xv6m-g863-2r99

Frequently asked questions

What is CVE-2023-0477?

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.

Is CVE-2023-0477 actively exploited?

A proof-of-concept exploit exists for CVE-2023-0477, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-0477?

CVE-2023-0477 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record