CVE detail
CVE-2026-8365
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 V200 migration runs on an upgraded site, is deserialized and triggers RaiiPattern::__destruct(), which executes arbitrary PHP callables via call_user_func().
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 27.1 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
14 source links · newest first
- Wordfence Intelligence Weekly WordPress Vulnerability Report (June 8, 2026 to June 14, 2026)Wordfence
Engine Newsletters The Events Calendar 6.15.12-6.16.2 - Unauthenticated SQL Injection 7.5 CVSS Rating 7.5 (High) CVE-ID CVE-2026-49772 Patch Status Patched Published Jun 8, 2026 Affected Software The Events Calendar [the-events-calendar] Researcher vtim More Details > WordPress & WooCommerce Scraper Plugin, Import Data from Any WebSite. WP Maps – Googl
vendorwww.wordfence.comJun 18, 2026, 5:31 PM - https://www.wordfence.com/threat-intel/vulnerabilities/id/fd216743-ce8d-4632-9fd1-d63502c2dfcd?source=cvewww.wordfence.com
No excerpt available.
Patchwww.wordfence.comJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/trunk/inc/classes/raii.php#L12themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/trunk/inc/classes/db-versioning/utils/db-search-replacer.php#L98themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/trunk/admin/helpers/validator.php#L75themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/trunk/admin/helpers/meta-boxes.php#L104themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.41/inc/classes/raii.php#L12themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.41/inc/classes/db-versioning/utils/db-search-replacer.php#L98themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.41/admin/helpers/validator.php#L75themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.41/admin/helpers/meta-boxes.php#L104themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.35/inc/classes/raii.php#L12themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.35/inc/classes/db-versioning/utils/db-search-replacer.php#L98themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.35/admin/helpers/validator.php#L75themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM - https://themes.trac.wordpress.org/browser/blocksy/2.1.35/admin/helpers/meta-boxes.php#L104themes.trac.wordpress.org
No excerpt available.
Patchthemes.trac.wordpress.orgJun 9, 2026, 9:16 AM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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