What is CVE-2026-48537?

CVE-2026-48537 is a medium-severity vulnerability in Gfi Software Archiver, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-23.

How severe is CVE-2026-48537?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Gfi Software Archiver

CVE-2026-48537

GFI Archiver before 15.13 contains a stored cross-site scripting vulnerability in the File Archive Assistant configuration that allows authenticated attackers to inject arbitrary web script or HTML via the excluded extensions parameter to /Archiver/FileArchiveAssistantWizard.aspx. The injected payload is stored by FileArchiveAssistantWizard.btnSave_Click() without output encoding and is executed in the browsers of users who subsequently view the File Archive Assistant settings page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (14.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Gfi Software Archiver — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-48537?: CVE-2026-48537 is a medium-severity vulnerability in Gfi Software Archiver, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-07-23.
How severe is CVE-2026-48537?: Medium severity. CVSS v3 base score is 5.4 out of 10.