CVE-2026-27503 SVXportal <= 2.5 admin/log.php Search Reflected XSS
Reflected XSS in SVXportal admin log allows attackers to execute scripts in an administrator's browser, potentially leading to session theft or administrative 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-2026-27503?
CVE-2026-27503 is a medium-severity cross-site scripting vulnerability in sa2blv SVXportal, published on 20 Feb 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
SVXportal version 2.5 and prior contain a reflected cross-site scripting vulnerability in admin/log.php via the search query parameter. When an authenticated administrator views a crafted URL, the application embeds the unsanitized parameter value directly into an HTML input value attribute, allowing attacker-supplied JavaScript to execute in the administrator's browser. This can enable session theft, administrative action forgery, or other browser-based compromise in the context of an admin user.
Weakness: CWE-79
Which versions are affected by CVE-2026-27503?
It affects 1 product.
Products include Radioinorr Svxportal.
How do I fix CVE-2026-27503?
No fix has been published for CVE-2026-27503 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-2026-27503 being exploited?
There is no known exploitation of CVE-2026-27503 in the wild and no public exploit code.
Other vulnerabilities in sa2blv SVXportal
Sources
Also known as GHSA-w246-2vcp-75v8.