Vulnerability · Published Aug 30, 2021 · Assigned by WPScan

CVE-2021-24667Gallery Blocks with Lightbox < 2.2.1- Authenticated Stored Cross-Site Scripting

Medium 5.4

In plain English

A medium-severity cross-site scripting in Gallery Blocks with Lightbox. Image Gallery, (HTML5 video , YouTube, Vimeo) Video Gallery and Lightbox for native gallery from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS NVD)5.4Medium

Exploit odds (30 days)0.6%top 50.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

A stored cross-site scripting vulnerability has been discovered in : Simply Gallery Blocks with Lightbox (Version – 2.2.0 & below). The vulnerability exists in the Lightbox functionality where a user with low privileges is allowed to execute arbitrary script code within the context of the application. This vulnerability is due to insufficient validation of image parameters in meta data.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Gallery Blocks with Lightbox. Image Gallery, (HTML5 video , YouTube, Vimeo) Video Gallery and Lightbox for native gallery	2.2.1 – before 2.2.1

Weakness: CWE-79

References

https://www.fortiguard.com/zeroday/FG-VD-21-060 x_refsource_MISC
https://wpscan.com/vulnerability/5925b263-6d6f-4a03-a98a-620150dff8f7 x_refsource_MISC