How severe is CVE-2026-27503?

CVE-2026-27503 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-27503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27503?

CVE-2026-27503 affects Radioinorr Svxportal. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27503?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-27503 have an EU (EUVD) identifier?

Yes. CVE-2026-27503 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8324.

When was CVE-2026-27503 published?

CVE-2026-27503 was published on 2026-02-20 and last updated on 2026-06-17.

CVE-2026-27503

CVE-2026-27503 is a medium-severity vulnerability in Radioinorr Svxportal with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v4: 5.1
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8324
Weakness: CWE-79
Affected product: Radioinorr Svxportal
Published: 2026-02-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-27503?: CVE-2026-27503 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-27503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27503?: CVE-2026-27503 affects Radioinorr Svxportal. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27503?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27503 have an EU (EUVD) identifier?: Yes. CVE-2026-27503 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8324.
When was CVE-2026-27503 published?: CVE-2026-27503 was published on 2026-02-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:radioinorr:svxportal:*:*:*:*:*:*:*:*

More vulnerabilities in Radioinorr Svxportal

CVE-2026-27506 — Medium (CVSS 6.1): SVXportal version 2.5 and prior contain a stored cross-site scripting vulnerability in the user profile update workflow…
CVE-2026-27505 — Medium (CVSS 6.1): SVXportal version 2.5 and prior contain a stored cross-site scripting vulnerability in the user registration workflow…
CVE-2026-27504 — Medium (CVSS 6.1): SVXportal version 2.5 and prior contain a reflected cross-site scripting vulnerability in radiomobile_front.php via the…
CVE-2026-27502 — Medium (CVSS 6.1): SVXportal version 2.5 and prior contain a reflected cross-site scripting vulnerability in log.php via the search query…

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