CVE-2023-47846Public exploitNetwork attack vector

Arbitrary file upload via image-paste handler

Published Mar 26, 2024 · Updated Apr 28, 2026

Unrestricted file upload in WP Githuber MD 1.16.2 and earlier allows remote authenticated users to place executable files on servers. The admin_githuber_image_paste() AJAX handler preserves the attacker-supplied extension and moves the upload without restricting file types. Author-level WordPress access and the Image Paste module are required; an uploaded server-side script can run as a backdoor.

CVSS severity9.1
Critical
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Unrestricted file upload in WP Githuber MD 1.16.2 and earlier allows remote authenticated users to place executable files on servers. The admin_githuber_image_paste() AJAX handler preserves the attacker-supplied extension and moves the upload without restricting file types. Author-level WordPress access and the Image Paste module are required; an uploaded server-side script can run as a backdoor.

The record

CVE
CVE-2023-47846
Published
Mar 26, 2024
Updated
Apr 28, 2026
Vendor
Terry Lin
Product
WP Githuber MD
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.16.2
  2. Affected versionversion=n/a <=1.16.2 changes=[{"at":"1.16.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Terry Lin · WP Githuber MDversion=0 <1.16.2; version=n/a <=1.16.2 changes=[{"at":"1.16.3","status":"unaffected"}]

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
9.1PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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