Vulnerability Details: Authenticated Persistent Cross-Site Scripting (XSS) in Photo Gallery by 10Web

One of the changelog entries for a new version of the plugin Photo Gallery (Photo Gallery by 10Web) released yesterday is “Fixed: Authenticated stored XSS.”. Looking at the changes made in that version it appears that refers to a change made in the plugin’s shortcode functionality. In testing this out we found that previously, logged in users could create new shortcodes for the plugin that included malicious JavaScript, so there was an authenticated persistent cross-site scripting (XSS) vulnerability.

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This post provides insights on a vulnerability in the WordPress plugin Photo Gallery not discovered by us, where the discoverer hadn't provided the details needed for us to confirm the vulnerability while we were adding it to the data set for our service, so the rest of its contents are limited to subscribers of our service.

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