cvedb.io
CVE-2026-8365
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-06-09T09:16:31.013 · Last modified 2026-06-17T11:03:51.277

Summary

The Blocksy theme for WordPress is vulnerable to PHP Object Injection leading to Remote Code Execution via the 'blocksy_meta' REST API field and the V200 database migration in versions up to and including 2.1.35. This is due to insufficient input sanitization in the blocksy_sanitize_post_meta_options() function, which only blocks values containing '<' or '>' and does not prevent serialized PHP object strings from being stored in post meta, combined with the SearchReplacer::run_recursively() function unconditionally deserializing all string values via @unserialize() during migration without restricting allowed classes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a serialized Blocksy\RaiiPattern object into post meta that, when the V

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.