CVE-2026-27505 SVXportal <= 2.5 admin/user_action.php Stored XSS
Unauthenticated attackers can inject JavaScript via registration fields that executes in administrators' browsers, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-27505?
CVE-2026-27505 is a medium-severity cross-site scripting vulnerability in sa2blv SVXportal, published on 20 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
SVXportal version 2.5 and prior contain a stored cross-site scripting vulnerability in the user registration workflow (index.php submitting to admin/user_action.php). User-supplied fields such as Firstname, lastname, and email are stored in the backend database without adequate output encoding and are later rendered in the administrator interface (admin/users.php), allowing an unauthenticated remote attacker to inject arbitrary JavaScript that executes in an administrator's browser upon viewing the affected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-27505?
It affects 1 product.
Products include Radioinorr Svxportal.
How do I fix CVE-2026-27505?
No fix has been published for CVE-2026-27505 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-2026-27505 being exploited?
There is no known exploitation of CVE-2026-27505 in the wild and no public exploit code.
Other vulnerabilities in sa2blv SVXportal
Sources
Also known as GHSA-87jc-9r3r-58w8.