CVE-2025-0767Network attack vector

Administrator-level object injection via unserialized query parameter

Published Feb 27, 2025 · Updated Feb 27, 2025

PHP object injection in Melapress WP Activity Log 5.3.2 allows remote authenticated users to inject objects via a crafted query parameter. The write_csv_ajax method in myapp/classes/Writers/class-csv-writer.php base64-decodes and unserializes the POST query value without validating its serialized content. A valid export nonce and Administrator-level access are required, and file deletion, data retrieval, or code execution additionally requires a usable POP chain from another installed plugin or theme.

CVSS severity9.8
Critical
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in Melapress WP Activity Log 5.3.2 allows remote authenticated users to inject objects via a crafted query parameter. The write_csv_ajax method in myapp/classes/Writers/class-csv-writer.php base64-decodes and unserializes the POST query value without validating its serialized content. A valid export nonce and Administrator-level access are required, and file deletion, data retrieval, or code execution additionally requires a usable POP chain from another installed plugin or theme.

The record

CVE
CVE-2025-0767
Published
Feb 27, 2025
Updated
Feb 27, 2025
Vendor
Melapress
Product
WP Activity Log
Classifications
CWE-502, CAPEC-586
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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=5.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Melapress · WP Activity Logversion=5.3.2

Published CVSS scores

6.3Fluid AttacksCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.6WordfenceCVSS:3.1/AV:N/AC:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection

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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