CVE-2026-7637 Details
Description
The Boost plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.0.3 via deserialization of untrusted input in the STYXKEY-BOOST_USER_LOCATION cookie. This makes it possible for unauthenticated attackers to inject a 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.
A PHP Object Injection vulnerability has been identified in the Boost plugin for WordPress, affecting versions 2.0.3 and prior. The issue arises from the deserialization of untrusted data in the STYXKEY-BOOST_USER_LOCATION cookie, allowing unauthenticated attackers to inject PHP objects. While the vulnerable plugin itself does not have a known payload execution chain, the vulnerability could be exploited if another plugin or theme with a compatible payload execution chain is installed, potentially leading to unauthorized file deletions, sensitive data exposure, or arbitrary code execution.
Users are advised to update the Boost WordPress plugin to version 2.0.4 or a later patched version.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 20, 2026CISA-ADP
Assessed May 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.pixelyoursite.com/boost-plugin | [email protected] | Content WallVendor |
| https://www.wordfence.com/threat-intel/vulnerabilities/id/e391f560-2037-4180-a77e-1731524a318c?source=cve | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Pixelyoursite Boost | <= 2.0.3 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 20, 2026 | New CVE Received | [email protected] |