CVE-2026-21904

| EUVD-2026-21077 MEDIUM
2026-04-09 juniper GHSA-3cpj-89qh-f3x6
5.1
CVSS 4.0
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CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
A
Scope
X

Lifecycle Timeline

3
EUVD ID Assigned
Apr 09, 2026 - 21:45 euvd
EUVD-2026-21077
Analysis Generated
Apr 09, 2026 - 21:45 vuln.today
CVE Published
Apr 09, 2026 - 21:26 nvd
MEDIUM 5.1

Tags

XSS Juniper Junos Space

Description

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.

Analysis

Stored cross-site scripting (XSS) in Juniper Networks Junos Space allows unauthenticated remote attackers to inject malicious script tags into the list filter field, which execute with the permissions of any user who views the affected page, including administrators. All versions before 24.1R5 Patch V3 are vulnerable. …

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Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +26
POC: 0

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CVE-2026-21904 vulnerability details – vuln.today
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