CVE-2026-21904

MEDIUM

Junos Space: ilpFilter field on nLegacy.jsp is vulnerable to reflected cross-site script injection

Title source: cna

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://kb.juniper.net/JSA106003

Scores

CVSS v3 6.1

EPSS 0.0021

EPSS Percentile 11.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

Juniper Networks/Junos Space < 24.1R5 Patch V3

Published Apr 09, 2026

Tracked Since Apr 10, 2026