PT-2026-31743 · Juniper Networks · Junos Space

Published 2026-04-09 · Updated 2026-04-10 · CVE-2026-21904

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos Space versions prior to 24.1R5 Patch V3

Description A flaw exists in Juniper Networks Junos Space that allows an attacker to inject script tags into the list filter field. When another user visits the affected page, the attacker can execute commands with the target user's permissions, potentially including administrator privileges.

Recommendations Update to Junos Space 24.1R5 Patch V3 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-21904

Affected Products

Junos Space

References · 3

• https://kb.juniper.net/JSA106003 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21904 · Security Note
• https://twitter.com/CVEnew/status/2042561829877223552 · Twitter Post