CVE-2026-103405: Juniper Networks Session Smart Router · Injection
Affects Juniper Networks Session Smart RouterSource CVE Database V5
Not known to be exploited · CVSS 5.8 Medium · fixed in 7.2.3 : update Juniper Networks Session Smart Router when convenient.
Data as of 28 Oct 2026, 17:22 UTC
- Patch
- Available – fixed in 7.2.3, 7.1.7, 7.0.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 28 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Session Smart to 7.2.3, 7.1.7 or 7.0.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Juniper NetworksSession Smart Router | Affected
| Fixed in
|
| Juniper NetworksSession Smart Router | Affected
| Fixed in
|
| Juniper NetworksSession Smart Router | Affected
| Fixed in
|
| Juniper NetworksSession Smart Conductor | Affected
| Fixed in
|
| Juniper NetworksSession Smart Conductor | Affected
| Fixed in
|
| Juniper NetworksSession Smart Conductor | Affected
| Fixed in
|
AI-suggested
Fixed versions 7.0.5, 7.1.7, and 7.2.3 are available and should be applied to remediate this vulnerability. No additional mitigation actions are indicated by the vendor advisory. Users should upgrade to these fixed releases to address the issue.
Description
CVE-2026-103405 is an injection vulnerability in the web server component of Juniper Networks Session Smart Router and Session Smart Conductor. It allows an attacker to inject arbitrary HTTP headers through unsanitized request body parameters. The flaw is classified as CWE-74, indicating improper neutralization of special elements in output used by a downstream component. This vulnerability affects multiple versions prior to fixed releases 7.0.5, 7.1.7, and 7.2.3. The CVSS 3.1 base score is 5.8, reflecting a medium severity with network attack vector, low attack complexity, no privileges or user interaction required, and a scope change. No known exploits are reported in the wild.