CVE-2026-4977Network attack vector

Restricted usermeta modification via unchecked field selector

Published Apr 10, 2026 · Updated Apr 10, 2026

Missing authorization in UsersWP 1.2.58 and earlier allows remote authenticated users to clear restricted fields in their own user metadata. UsersWP_Forms::upload_file_remove() accepts the htmlvar AJAX parameter as a usermeta key without allowlisting permitted fields or checking the field's for_admin_use setting. Subscriber-level access is sufficient to reset admin-only metadata on the caller's account, but the record reports no ability to modify another user's data.

CVSS severity4.3
Medium
EPSS probability0.30%
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 UsersWP 1.2.58 and earlier allows remote authenticated users to clear restricted fields in their own user metadata. UsersWP_Forms::upload_file_remove() accepts the htmlvar AJAX parameter as a usermeta key without allowlisting permitted fields or checking the field's for_admin_use setting. Subscriber-level access is sufficient to reset admin-only metadata on the caller's account, but the record reports no ability to modify another user's data.

The record

CVE
CVE-2026-4977
Published
Apr 10, 2026
Updated
Apr 10, 2026
Vendor
AyeCode Ltd
Product
UsersWP
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 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 <=1.2.58

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AyeCode Ltd · UsersWPversion=0 <=1.2.58

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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.

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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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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