CVE-2025-58815 Overview
CVE-2025-58815 is a deserialization of untrusted data vulnerability [CWE-502] in the Aitasi Coming Soon WordPress plugin by Rubel Miah. The flaw affects all versions of aitasi-coming-soon up to and including 2.0.2. Attackers with high-privilege access can trigger PHP Object Injection by submitting crafted serialized payloads to vulnerable plugin endpoints. Successful exploitation can lead to arbitrary code execution, data tampering, and full compromise of the WordPress site.
Critical Impact
Authenticated attackers can inject malicious PHP objects to achieve high-impact compromise of confidentiality, integrity, and availability on affected WordPress installations.
Affected Products
- Rubel Miah Aitasi Coming Soon plugin (aitasi-coming-soon)
- All versions from n/a through 2.0.2
- WordPress sites with the plugin installed and activated
Discovery Timeline
- 2025-09-05 - CVE-2025-58815 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-58815
Vulnerability Analysis
The Aitasi Coming Soon plugin processes serialized input without validating the source or contents. PHP's unserialize() function reconstructs arbitrary object instances from attacker-controlled data. When the plugin deserializes untrusted input, it instantiates classes whose magic methods such as __wakeup, __destruct, or __toString can be abused.
An attacker who controls the serialized payload can chain available classes from WordPress core, other active plugins, or themes to construct a POP (Property-Oriented Programming) gadget. The result is arbitrary code execution, file manipulation, or privilege escalation in the WordPress context.
The attack requires high privileges, which limits opportunistic exploitation but remains a significant risk for sites where editor-level or administrative accounts are shared or compromised through credential theft.
Root Cause
The root cause is unsafe use of PHP deserialization on data that crosses a trust boundary. The plugin fails to validate, sign, or restrict the classes that can be instantiated from serialized input, violating secure deserialization practices defined under [CWE-502].
Attack Vector
Exploitation occurs over the network through standard WordPress HTTP requests. The attacker must authenticate with a high-privilege account, then submit a crafted serialized payload to a vulnerable plugin parameter. No user interaction is required. Refer to the Patchstack Vulnerability Report for additional technical context.
Detection Methods for CVE-2025-58815
Indicators of Compromise
- HTTP POST requests to wp-admin or plugin endpoints containing serialized PHP markers such as O:, a:, or s: in unexpected parameters
- Unexpected creation or modification of PHP files under wp-content/plugins/aitasi-coming-soon/ or other writable WordPress directories
- New administrator accounts or modified wp_options entries following plugin interaction
- Outbound connections from the PHP-FPM or Apache worker process to unfamiliar hosts
Detection Strategies
- Inspect web server access logs for serialized object signatures in request bodies and query strings targeting the plugin
- Monitor WordPress audit logs for high-privilege account activity correlated with plugin configuration changes
- Apply Web Application Firewall (WAF) rules that block PHP serialization patterns in untrusted input
Monitoring Recommendations
- Enable file integrity monitoring across the WordPress installation, with priority on wp-content/plugins/ and wp-content/uploads/
- Forward web server, PHP error, and WordPress logs to a centralized SIEM for correlation and retention
- Alert on unserialize()-related PHP errors and unusual child processes spawned by the web server user
How to Mitigate CVE-2025-58815
Immediate Actions Required
- Deactivate and remove the Aitasi Coming Soon plugin until a patched version is available
- Audit all administrator and editor accounts, rotate credentials, and enforce multi-factor authentication
- Review recent changes to WordPress files, scheduled tasks, and database options for signs of tampering
- Restrict access to wp-admin by IP allowlist where feasible
Patch Information
As referenced in the Patchstack Vulnerability Report, no fixed version is currently listed. Site operators should remove the plugin and monitor the vendor channel for an updated release beyond 2.0.2.
Workarounds
- Uninstall the plugin entirely if its functionality is not essential
- Deploy WAF signatures that block serialized PHP payloads in HTTP requests to the WordPress application
- Limit the number of high-privilege accounts and apply the principle of least privilege to editorial workflows
- Disable PHP functions used in common deserialization gadget chains where compatible with the site
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
