What is CVE-2026-27503?

CVE-2026-27503 is a medium-severity vulnerability in Radioinorr Svxportal, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-20.

How severe is CVE-2026-27503?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Radioinorr Svxportal

CVE-2026-27503

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (5.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Radioinorr Svxportal
Sa2blv Svxportal — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (Product, product)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-27503?: CVE-2026-27503 is a medium-severity vulnerability in Radioinorr Svxportal, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-20.
How severe is CVE-2026-27503?: Medium severity. CVSS v3 base score is 6.1 out of 10.