CVE-2025-9981 Multiple Stored XSS in QuickCMS
Admins can inject malicious scripts into QuickCMS sliders, enabling arbitrary code execution on all pages despite default restrictions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-9981?
CVE-2025-9981 is a medium-severity cross-site scripting vulnerability in OpenSolution QuickCMS, published on 23 Oct 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
QuickCMS is vulnerable to multiple Stored XSS in slider editor functionality (sliders-form). Malicious attacker with admin privileges can inject arbitrary HTML and JS into website, which will be rendered/executed on every 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-2025-9981?
It affects 1 product.
Products include Opensolution Quick.cms.
How do I fix CVE-2025-9981?
No fix has been published for CVE-2025-9981 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-2025-9981 being exploited?
There is no known exploitation of CVE-2025-9981 in the wild and no public exploit code.
Other vulnerabilities in OpenSolution QuickCMS
Sources
Also known as GHSA-2hmv-pxch-4v62.