CVE-2022-3383Public exploitNetwork attack vector

Admin-authenticated code execution via unrestricted callback dispatch

Published Nov 29, 2022 · Updated Apr 8, 2026

Code injection in Ultimate Member 2.5.0 and earlier allows remote authenticated users with administrative access to execute server-side code. The get_option_value_from_callback function passes a user-controlled callback name to call_user_func without restricting it to approved callables. An administrator can reach the vulnerable multi-select field handling and invoke arbitrary PHP callbacks with the web server process privileges.

CVSS severity7.2
High
EPSS probability2.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Ultimate Member 2.5.0 and earlier allows remote authenticated users with administrative access to execute server-side code. The get_option_value_from_callback function passes a user-controlled callback name to call_user_func without restricting it to approved callables. An administrator can reach the vulnerable multi-select field handling and invoke arbitrary PHP callbacks with the web server process privileges.

The record

CVE
CVE-2022-3383
Published
Nov 29, 2022
Updated
Apr 8, 2026
Vendor
Ultimate Member Group Ltd
Product
Ultimate Member
Classifications
CWE-94
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=2.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ultimate Member Group Ltd · Ultimate Memberversion=0 <=2.5.0

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:H/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

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')

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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