CVE-2026-103405
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Improper HTTP Header Injection in Juniper Session Smart Router
Vulnerability report for CVE-2026-103405, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-28
Last updated on: 2026-10-28
Assigner: Juniper Networks, Inc.
Description
Description
An Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the web server in Juniper Networks Session Smart Router and Session Smart Conductor allows an attacker to inject arbitrary HTTP headers via unsanitized request body parameters.
CVSS Scores
EPSS Scores
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| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Juniper Networks | Session Smart Router | 0 |
| Juniper Networks | Session Smart Router | 7.1.0 |
| Juniper Networks | Session Smart Router | 7.2.0 |
| Juniper Networks | Session Smart Conductor | 0 |
| Juniper Networks | Session Smart Conductor | 7.1.0 |
| Juniper Networks | Session Smart Conductor | 7.2.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-74 | The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. |
