WP Mail Logging <= 1.15.0 - Unauthenticated PHP Object Injection via Email Log Message Field
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2471
- 2026-10-03 Alias added: GHSA-675c-q49r-3647
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/10e4c52d-c82f-4393-9a56-5714b3a108d1?source=cve
- https://plugins.trac.wordpress.org/browser/wp-mail-logging/tags/1.15.0/lib/vendor/brandonwamboldt/wp-orm/src/BaseModel.php#L39
- https://plugins.trac.wordpress.org/browser/wp-mail-logging/tags/1.15.0/src/WPML_Plugin.php#L553
- https://plugins.trac.wordpress.org/browser/wp-mail-logging/tags/1.15.0/src/Renderer/WPML_MailRenderer_AJAX_Handler.php#L100
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3464813%40wp-mail-logging&old=3358334%40wp-mail-logging&sfp_email=&sfph_mail=
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Sources
- CVE-2026-2471 · CVE Program
- CVE-2026-2471 · NVD
- FIRST EPSS
- GHSA-675c-q49r-3647 · GitHub Advisory Database · CC BY 4.0
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