Clearfy Cache settings imports permit PHP object injection
Clearfy Cache before 2.4.3 unserializes settings-import data without restricting permitted PHP classes. An Administrator can supply a crafted serialized object; if the WordPress environment contains a compatible gadget chain, object destruction or wakeup behavior may lead to remote code execution. The CNA record does not disclose the import route, field, unserialize call or a confirmed gadget chain.
- Component
- Clearfy Cache
- Plugin slug
clearfy-cache- Affected
- < 2.4.3
- Safe version
2.4.3- Published
- Aug 03, 2026
This CVE was published Aug 03, 2026 and is one of 3 known issues for this plugin.
Update, patch or deactivate.
Update Clearfy Cache to 2.4.3 or later. Restrict settings imports to trusted administrators, review imported settings and investigate unexpected PHP object or filesystem activity. Exploitation requires a suitable gadget chain in installed code.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L