givanz
Not on CISA's list of exploited flaws, and not in the news we track.
CVE-2026-126378Critical9.4
Reading the vendor advisory
Black Shard's team can check your exposure to CVE-2026-126378 and take the fix off your plate.
Vvveb through 1.0.8.6 contains a file upload vulnerability in the theme installer validFile() function that uses strpos() instead of strict path matching. Attackers with admin credentials can upload a ZIP containing a PHP file whose path includes /theme.php to achieve remote code execution on nginx deployments.
Black Shard's team can check your exposure, take a fix off your plate or step in on a live incident.
Severity
9.4of 10, critical
Updated 13 Nov 2026, 12:04 UTC, 31 of 36 sources answering.
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