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CVE-2026-21904

MEDIUM CVSS 4.0: 5.1 EPSS 0.04%
Updated Apr 09, 2026
Juniper
Parameter Value
CVSS 5.1 (MEDIUM)
Affected Versions before 24.1
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Juniper
Public PoC No

An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to inject script tags in the list filter field that, when visited by another user, enables the attacker to execute commands with the target's permissions, including an administrator. This issue affects all versions of Junos Space before 24.1R5 Patch V3.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Active
User action required

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0