CVE-2025-54543 Stored XSS in QuickCMS
Admins can inject malicious scripts via SEO fields, leading to stored XSS and potential site compromise.
- 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-2025-54543?
CVE-2025-54543 is a medium-severity cross-site scripting vulnerability in OpenSolution QuickCMS, published on 28 Aug 2025. 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
QuickCMS is vulnerable to Stored XSS via sDescriptionMeta parameter in page editor SEO functionality. Malicious attacker with admin privileges can inject arbitrary HTML and JS into website, which will be rendered/executed when visiting edited page. By default admin user is not able to add JavaScript into the website.
The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.8 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
Weakness: CWE-79
Which versions are affected by CVE-2025-54543?
It affects 1 product.
Products include Opensolution Quick.cms.
How do I fix CVE-2025-54543?
No fix has been published for CVE-2025-54543 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-2025-54543 being exploited?
There is no known exploitation of CVE-2025-54543 in the wild and no public exploit code.
Other vulnerabilities in OpenSolution QuickCMS
Sources
Also known as GHSA-qwgj-xc9p-g242.