Juniper Networks Session Smart Conductor/Session Smart Router up to 7.0.4/7.1.6/7.2.2 Web Server injection

Summaryinfo

A vulnerability identified as problematic has been detected in Juniper Networks Session Smart Conductor and Session Smart Router up to 7.0.4/7.1.6/7.2.2. This affects an unknown part of the component Web Server. The manipulation leads to injection. This vulnerability is referenced as CVE-2026-103405. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Juniper Networks Session Smart Conductor and Session Smart Router up to 7.0.4/7.1.6/7.2.2 and classified as problematic. This issue affects some unknown functionality of the component Web Server. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is:

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.

The advisory is shared at supportportal.juniper.net. The identification of this vulnerability is CVE-2026-103405 since 09/30/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/28/2026). MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading to version 7.0.5, 7.1.7 or 7.2.3 eliminates this vulnerability.

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Productinfo

Type

• Router Operating System

Vendor

• Juniper Networks

Name

• Session Smart Conductor
• Session Smart Router

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4
• 7.1.5
• 7.1.6
• 7.2.0
• 7.2.1
• 7.2.2

License

• commercial

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

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Timelineinfo

Sourcesinfo

Entryinfo

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