CVE-2022-50905 e107 CMS v3.2.1 - Reflected XSS via Comment Flow
Attackers can inject malicious scripts via reflected XSS in comments or stored XSS via SVG uploads, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-50905?
CVE-2022-50905 is a medium-severity cross-site scripting vulnerability in E107 E107, published on 13 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
e107 CMS version 3.2.1 contains multiple vulnerabilities that allow cross-site scripting (XSS) attacks. The first vulnerability is a reflected XSS that occurs in the news comment functionality when authenticated users interact with the comment form. An attacker can inject malicious JavaScript code through the URL parameter that gets executed when users click outside the comment field after typing content. The second vulnerability involves an upload restriction bypass for authenticated administrators, allowing them to upload SVG files containing malicious code through the media manager's remote URL upload feature. This results in stored XSS when the uploaded SVG files are accessed. These vulnerabilities were discovered by Hubert Wojciechowski and affect the news.php and image.php components of the CMS.
Weakness: CWE-79
Which versions are affected by CVE-2022-50905?
It affects 1 product.
Products include E107 E107.
How do I fix CVE-2022-50905?
No fix has been published for CVE-2022-50905 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2022-50905 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-50905 exists.
Other vulnerabilities in E107 E107
- CVE-2021-27885 Cross-site request forgery in n/a
- CVE-2016-10753 Deserialization in n/a
- CVE-2018-15901 Cross-site request forgery in n/a
- CVE-2022-50916 e107 CMS v3.2.1 - Upload restriction bypass (Authenticated [Admin])+ Server file override
- CVE-2022-50907 e107 CMS v3.2.1 - Admin Upload Restriction Bypass + RCE
Sources
Also known as GHSA-7pf6-4mfj-vmpf.