# CVE-2026-48536: GFI Archiver stored XSS in General Settings SMTP configuration

Source: https://junglewise.ai/threats/cve-2026-48536-gfi-archiver-stored-xss-in-general-settings-smtp-configuration  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-23. Updated: 2026-07-23  
License: CC BY 4.0 with a link back

CVE-2026-48536 · Severity: medium · CVSS 5.4 · Published 2026-07-23

GFI Archiver, a solution used for archiving business emails and files, is vulnerable to a security flaw in its configuration settings. An authenticated user can inject malicious scripts into the SMTP server address field, which are then saved and executed in the browsers of other administrators who view the settings page. This could allow an attacker to perform unauthorized actions or steal session information from other users of the management console.

Technologies: [GFI Software Archiver](https://junglewise.ai/threats/technologies/archiver). Vendors: [GFI Software](https://junglewise.ai/threats/vendors/gfi-software).

## Quick answers

**Is CVE-2026-48536 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48536 being exploited in the wild.

**How severe is CVE-2026-48536?** Medium severity, with a CVSS score of 5.4, published 23 July 2026.

**Which products and versions are affected?** GFI Software Archiver before 15.13.

**Is there a fix for CVE-2026-48536?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-48536 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-48536?** Check whether you run GFI Software Archiver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stored cross-site scripting (XSS) vulnerability exists in GFI Archiver versions prior to 15.13. The flaw is located in the General Settings SMTP configuration within /Archiver/GeneralSettingsWizard.aspx. An authenticated attacker can submit a malicious payload via the SMTP server address parameter, which is processed by the GeneralSettingsWizard.SaveAllConfigSettings() function. Because the application fails to perform proper output encoding before storing and later displaying this data, the script executes in the context of any user who visits the General Settings page. This can lead to session hijacking or unauthorized administrative actions. The issue is resolved in version 15.13.

## Affected products

- GFI Software Archiver before 15.13

## Timeline

- 2026-07-23: disclosed
- 2026-07-23: advisory

## References

- [https://gfi.ai/products-and-solutions/network-security-solutions/archiver/resources/documentation/product-releases](https://gfi.ai/products-and-solutions/network-security-solutions/archiver/resources/documentation/product-releases)
- [https://www.vulncheck.com/advisories/gfi-archiver-stored-xss-via-generalsettingswizard-aspx](https://www.vulncheck.com/advisories/gfi-archiver-stored-xss-via-generalsettingswizard-aspx)

## Related threats

- [GFI Archiver stored XSS in MailInsights scheduled report configuration](https://junglewise.ai/threats/cve-2026-48539-gfi-archiver-stored-xss-in-mailinsights-scheduled-report)
- [GFI Archiver stored XSS in ImportSettingsWizard](https://junglewise.ai/threats/cve-2026-48538-gfi-archiver-stored-xss-in-importsettingswizard)
- [GFI Archiver stored XSS in File Archive Assistant configuration](https://junglewise.ai/threats/cve-2026-48537-gfi-archiver-stored-xss-in-file-archive-assistant-configuration)
- [GFI Archiver stored XSS in Call Home proxy configuration](https://junglewise.ai/threats/cve-2026-48535-gfi-archiver-stored-xss-in-call-home-proxy-configuration)
- [GFI Archiver stored XSS in IMAP Server configuration](https://junglewise.ai/threats/cve-2026-48534-gfi-archiver-stored-xss-in-imap-server-configuration)