EUVD-2026-52180
GHSA-5953-j744-chvm
Severity by source
AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
Admin access (PR:H) and gadget chain dependency (AC:H) constrain exploitation, but successful deserialization achieves full RCE warranting C:H/I:H/A:H.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
Lifecycle Timeline
5DescriptionCVE.org
The Clearfy Cache WordPress plugin before 2.4.3 does not restrict the classes allowed when unserializing settings-import data, allowing users with administrator access to perform PHP Object Injection attacks, which may lead to remote code execution when a suitable gadget chain is present in the environment.
AnalysisAI
PHP Object Injection in Clearfy Cache WordPress plugin (versions before 2.4.3) exposes administrator-authenticated users to potential remote code execution through unrestricted deserialization during settings import. The plugin's import handler passes attacker-controlled serialized data to PHP's unserialize() without class whitelisting, enabling object injection. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | WordPress administrator-level authentication is required (confirmed by CVSS PR:H). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS score of 4.1 (Medium) accurately reflects the dual constraints of PR:H (WordPress administrator access required) and AC:H (gadget chain dependency). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained WordPress administrator credentials - through credential stuffing, phishing, or insider access - navigates to the Clearfy Cache settings panel and uses the import feature to upload a crafted serialized PHP payload. If the target WordPress installation includes a plugin or library providing a viable gadget chain (common in environments with Composer-managed dependencies or popular plugins), deserialization triggers a chain of PHP magic method calls resulting in arbitrary OS command execution under the web server's user account. … |
| Remediation | Upgrade Clearfy Cache to version 2.4.3 or later, which restricts the classes allowed during settings-import deserialization; the vendor patch is confirmed available per WPScan (https://wpscan.com/vulnerability/3daf62cd-eefe-49ec-89f7-b13f88111853/). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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