Photo Gallery < 1.6.4 - Admin+ Stored Cross-Site Scripting

2022-05-1600:00:00

dnr6419

photo gallery

admin+

stored

cross-site scripting

watermark

global settings

web browser

inspector

payload

number

general tab

preloaded images

exploit

EPSS

0.001

Percentile

24.8%

JSON

The plugin does not properly validate and escape some of its settings, which could allow high privilege users such as admin to perform Cross-Site Scripting attacks when unfiltered_html is disallowed

Go to Photo Gallery > Global Settings > Watermark

Using the web browser inspector, change the input type of the "Watermark font size" and "Watermark opacity" fields from number to text, and put the following payload in them, then save: " autofocus onfocus=alert(/XSS/)//

Other settings which should be number (such as "Number of preloaded images" in the General tab) are also affected

EPSS

0.001

Percentile

24.8%

JSON

Related for WPEX-ID:F7A0DF37-3204-4926-84EC-2204A2F22DE3