CVE-2026-50040 PUBLISHED

Cross-site Scripting in StoneFly Storage Concentrator

Assigner: icscert
Reserved: 22.06.2026 Published: 30.06.2026 Updated: 30.06.2026

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.

CVSS 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
CVSS Score: 5.1

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	Low
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	Active

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 6.1

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	StoneFly
Product	Storage Concentrator
Versions	Default: unaffected affected from 0 to 8.0.4.22 (excl.) Version 8.0.4.29 is unaffected

Vendor	StoneFly
Product	Storage Concentrator Virtual Machine
Versions	Default: unaffected affected from 0 to 8.0.4.22 (excl.) Version 8.0.4.29 is unaffected

Solutions

For additional questions or support, users may contact StoneFly at https://stonefly.com/contact-us/ .

Credits

David Yesland of Rhino Security Labs reported this vulnerability to CISA. reporter

References

Problem Types

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') CWE