WP Mail Logging <= 1.15.0 - Unauthenticated PHP Object Injection via Email Log Message Field
| CVE | CVE-2026-2471 |
|---|---|
| CVSS | 7.5 (High) |
| Publicly Published | February 27, 2026 |
| Last Updated | February 28, 2026 |
| Researcher |
Quốc Huy (jtwings)
- Puramu
|
Description
The WP Mail Logging plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.15.0 via deserialization of untrusted input from the email log message field. This is due to the `BaseModel` class constructor calling `maybe_unserialize()` on all properties retrieved from the database without validation. This makes it possible for unauthenticated attackers to inject a PHP Object by submitting a double-serialized payload through any public-facing form that sends email (e.g., Contact Form 7). When the email is logged and subsequently viewed by an administrator, the malicious payload is deserialized into an arbitrary PHP object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for WP Mail Logging
| Software Type | Plugin |
|---|---|
| Software Slug | wp-mail-logging (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.16, or a newer patched version |
| Affected Version |
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| Patched Version |
|
Recent vulnerabilities in WP Mail Logging
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | WP Mail Logging <= 1.11.2 - Missing Authorization to Notice Dismissal | June 23, 2023 | |||
| 2 | WP Mail Logging <= 1.11.1 - Unauthenticated Stored Cross-Site Scripting via Email | CVE-2023-3081 | Alex Thomas | June 8, 2023 | |
| 3 | Appsero <= 1.2.1 - Missing Authorization | December 16, 2022 | |||
| 4 | Appsero <= 1.2.0 - Cross-Site Request Forgery | CVE-2022-47150 | István Márton | December 14, 2022 | |
| 5 | WP Mail Logging < 1.10.0 - Unauthenticated Arbitrary Settings Change | Rotem Reiss | November 29, 2021 | ||
| 6 | WP Mail Logging <= 1.8.2 - Cross-Site Scripting | Saad Iqbal | November 11, 2017 |
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