CVE detail
CVE-2026-5743
The SimpLy Gallery Block & Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via block attributes in all versions up to, and including, 3.3.3.2. This is due to insufficient input sanitization and output escaping on the sliderMaxHeight block attribute in the pgc_sgb_render_callback() function. The vulnerability exists because the pgc_sgb_sanitize_custom_css() function uses a flawed regex pattern that only removes event handlers with quoted values (e.g., onfocus="alert()") but fails to catch unquoted event handlers (e.g., onfocus=alert(document.cookie)), allowing the malicious code to bypass sanitization. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages via block attributes that will execute whenever a user accesses an injected page.
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 24.9 · diversity 11.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 11
- within the 30d window
- Peak daily
- 10
- highest bucket
Evidence
Source links by recency
11 source links · newest first
- Wordfence Intelligence Weekly WordPress Vulnerability Report (July 6, 2026 to July 12, 2026)Wordfence
.26 - 4.1.15 - Missing Authorization to Unauthenticated Payment Bypass via REST API 5.3 CVSS Rating 5.3 (Medium) CVE-ID CVE-2026-13039 Patch Status Patched Published Jul 9, 2026 Affected Software Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce [wp-event-solution] Researcher Niv Kochan More Details > Flatsome FundEngine – Donation
vendorwww.wordfence.comJul 16, 2026, 8:29 PM - https://www.wordfence.com/threat-intel/vulnerabilities/id/29b1984d-e6da-49d5-8b40-cdf2f1bcc1bb?source=cvewww.wordfence.com
No excerpt available.
Patchwww.wordfence.comJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/changeset?reponame=&old=3581386%40simply-gallery-block&new=3581386%40simply-gallery-blockplugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L95plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L151plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L142plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/trunk/blocks/init.php#L122plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L95plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L151plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L142plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 AM - https://plugins.trac.wordpress.org/browser/simply-gallery-block/tags/3.3.2.2/blocks/init.php#L122plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgJul 11, 2026, 4:17 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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