Threat intelligence

Mixed Media Gallery Blocks <= 3.3.3.1 - Authenticated (Author+) Stored Cross-Site Scripting via sliderMaxHeight Block Attribute

CVE-2026-5743 · simply-gallery-block

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Simply Gallery Block at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Mixed Media Gallery Blocks <= 3.3.3.1 - Authenticated (Author+) Stored Cross-Site Scripting via sliderMaxHeight Block Attribute
Affected software: simply-gallery-block(Plugin)
Affected versions: ≤ 3.3.3.1
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-5743
Published: 10 July 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 29b1984d-e6da-49d5-8b40-cdf2f1bcc1bb). Methodology and redistribution notes

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