CVE-2026-21904

published 2026-04-09

CVE-2026-21904: An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to…

medium 5.1 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

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
juniper	junos_os	—	—
juniper	junos_space	—	—
juniper_networks	junos_space	< 24.1R5 Patch V3	24.1R5 Patch V3

CWE-79