CVE-2025-54300 Extension - norrnext.com - Stored XSS vulnerability in Quantum Manager component 1.0.0-3.2.0 for Joomla
Attackers can inject malicious scripts via unsanitized SVG uploads in the Quantum Manager component, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-54300?
CVE-2025-54300 is a high-severity cross-site scripting vulnerability in norrnext.com Quantum Mamanger component for Joomla, published on 25 Aug 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A stored XSS vulnerability in Quantum Manager component 1.0.0-3.2.0 for Joomla was discovered. The SVG upload feature does not sanitize uploads.
Weakness: CWE-79
Which versions are affected by CVE-2025-54300?
How do I fix CVE-2025-54300?
No fix has been published for CVE-2025-54300 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-2025-54300 being exploited?
There is no known exploitation of CVE-2025-54300 in the wild and no public exploit code.
Sources
Also known as GHSA-499q-9p4f-56jf.