SB2026050817 - Reflected XSS in Junos Space
Published: May 8, 2026
Security Bulletin ID
SB2026050817
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Cross-site scripting (CVE-ID: CVE-2026-21904)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: 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:U/U:Clear
The vulnerability allows a remote attacker to execute commands with the target user's permissions.
The vulnerability exists due to cross-site scripting in the ilpFilter field on nLegacy.jsp when handling user-supplied input in the list filter field. A remote attacker can inject script tags to execute commands with the target user's permissions.
Remediation
Install update from vendor's website.