CVE-2025-54751Network attack vector

Subscriber-level unauthorized plugin installation via missing capability check

Published Dec 18, 2025 · Updated Dec 18, 2025

Missing authorization in WPXPO PostX 4.1.36 and earlier allows remote authenticated users to perform unauthorized plugin installation. The plugin installation handler omits the capability check required before invoking WordPress installation logic, but public sources do not name the function or request parameter. Subscriber-level access is required, and published sources do not identify the install target, activation behavior, or any code-execution consequence.

CVSS severity7.1
High
EPSS probability0.25%
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 WPXPO PostX 4.1.36 and earlier allows remote authenticated users to perform unauthorized plugin installation. The plugin installation handler omits the capability check required before invoking WordPress installation logic, but public sources do not name the function or request parameter. Subscriber-level access is required, and published sources do not identify the install target, activation behavior, or any code-execution consequence.

The record

CVE
CVE-2025-54751
Published
Dec 18, 2025
Updated
Dec 18, 2025
Vendor
WPXPO
Product
PostX
Classifications
CWE-862, CAPEC-180
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 2025Record 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=n/a <=<= 4.1.36 changes=[{"at":"4.1.37","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPXPO · PostXversion=n/a <=<= 4.1.36 changes=[{"at":"4.1.37","status":"unaffected"}]

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/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.

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
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels

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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