CVE-2026-50040

Cross-site Scripting in StoneFly Storage Concentrator

MEDIUM
6.1
CVSS Score
Published: June 30, 2026 at 10:27 PM UTC
Updated: July 2, 2026 at 01:52 AM UTC
2 products affected across 1 vendorStorage Concentrator Virtual MachineStorage Concentrator

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.0.4.22
Affected range stops below 8.0.4.22, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 8.0.4.29 (unaffected)
v < 8.0.4.22
Affected range stops below 8.0.4.22, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 8.0.4.29 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMicscert
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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