CVE-2024-9520Network attack vector

Unauthorized data changes via unchecked AJAX callbacks

Published Oct 10, 2024 · Updated Apr 8, 2026

Missing authorization in UserPlus 2.0 and earlier allows remote authenticated users to alter user metadata and plugin options. Three AJAX callbacks in admin/admin-ajax.php invoke WordPress user-meta and option mutation operations without checking the caller's capability. Subscriber-level access is sufficient, and crafted requests can add, change, or delete stored user metadata and plugin configuration.

CVSS severity6.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in UserPlus 2.0 and earlier allows remote authenticated users to alter user metadata and plugin options. Three AJAX callbacks in admin/admin-ajax.php invoke WordPress user-meta and option mutation operations without checking the caller's capability. Subscriber-level access is sufficient, and crafted requests can add, change, or delete stored user metadata and plugin configuration.

The record

CVE
CVE-2024-9520
Published
Oct 10, 2024
Updated
Apr 8, 2026
Vendor
UserPlus
Product
User registration & user profile – UserPlus
Classifications
CWE-862, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2024CVE 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 <=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

UserPlus · User registration & user profile – UserPlusversion=0 <=2.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
6.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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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