Cross-site Scripting (XSS) - Stored in admidio/admidio


Reported on

Jan 4th 2022


I can create links using the Web links feature. However, since the input value is not URL-encoded, the onfocus and autofocus properties can be used by escaping the properties of the "A" tag using double quotation marks (").

Proof of Concept"//autofocus//onfocus="alert(document.domain)"//b="
1. Open the and Login
2. Go to "Web-Link" > "Create new link"
3. Fill in all the input values, enter the above PoC as the value of the Link address, and save it.
4. Click on the saved link

Video :


Through this vulnerability, an attacker is capable to execute malicious scripts.

We are processing your report and will contact the admidio team within 24 hours. 24 days ago
Pocas modified their report
24 days ago
We have contacted a member of the admidio team and are waiting to hear back 23 days ago
Markus Faßbender validated this vulnerability 21 days ago
Pocas has been awarded the disclosure bounty
The fix bounty is now up for grabs
20 days ago


Hello Markus Faßbender, Can you request a CVE?

Markus Faßbender confirmed that a fix has been merged on d86f98 18 days ago
Markus Faßbender has been awarded the fix bounty
links_new.php#L77L82 has been validated