CVE-2026-50040

Cross-site Scripting in StoneFly Storage Concentrator

Published Jun 30, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
Storage Concentrator (SC & SCVM) is vulnerable to reflected cross-site scripting due to unsanitized content being echoed back in 404 error pages. An attacker can craft a malicious URL that, when visited by an authenticated user, causes arbitrary script content to execute within the victim's browser session in the context of the application. This could be leveraged to steal session cookies, redirect users, or perform unauthorized actions on behalf of the victim.

Remediation

Vendor Solution

StoneFly recommends that users upgrade to Storage Concentrator version 8.0.4.29 or later to remediate these vulnerabilities.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Stonefly
Stonefly storage Concentrator
Stonefly storage Concentrator Virtual Machine
Vendors & Products Stonefly
Stonefly storage Concentrator
Stonefly storage Concentrator Virtual Machine
Type Values Removed Values Added
Description Storage Concentrator (SC & SCVM) is vulnerable to reflected cross-site scripting due to unsanitized content being echoed back in 404 error pages. An attacker can craft a malicious URL that, when visited by an authenticated user, causes arbitrary script content to execute within the victim's browser session in the context of the application. This could be leveraged to steal session cookies, redirect users, or perform unauthorized actions on behalf of the victim.
Title Cross-site Scripting in StoneFly Storage Concentrator
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Jul 1, 2026, 3:35 PM
Reserved
Jun 22, 2026, 8:13 PM
Status
Deferred
Published
Jun 30, 2026, 11:17 PM
Modified
Jul 1, 2026, 6:17 PM