What is the CVSS score of CVE-2026-26234?

CVE-2026-26234 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Smart Visu Server Firmware are affected by CVE-2026-26234?

A critical vulnerability in Smart Visu Server Firmware (CVE-2026-26234) enables attackers to manipulate request URLs through header injection, potentially allowing unauthorized access, credential…

Is there a public PoC exploit available for CVE-2026-26234?

Yes, a public proof-of-concept exploit is available for CVE-2026-26234. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-26234?

Within 24 hours: Inventory all Smart Visu Server instances and their firmware versions; isolate or restrict network access to affected systems if possible. Within 7 days: Implement WAF rules to block or sanitize X-Forwarded-Host headers; deploy network segmentation to limit lateral movement from compromised servers. Within 30 days: Monitor vendor communications closely for patch availability; conduct security assessment of all affected systems for signs of exploitation; develop and test migration or upgrade strategy.

Smart Visu Server Firmware CVE-2026-26234

HIGH

Improper Neutralization of HTTP Headers for Scripting Syntax (CWE-644)

2026-02-12 disclosure@vulncheck.com

Code Injection Smart Visu Server Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 20, 2026 - 15:14 vuln.today

Public exploit code

CVE Published

Feb 12, 2026 - 04:15 nvd

HIGH 8.8

DescriptionCVE.org

JUNG Smart Visu Server 1.1.1050 contains a request header manipulation vulnerability that allows unauthenticated attackers to override request URLs by injecting arbitrary values in the X-Forwarded-Host header. Attackers can manipulate proxied requests to generate tainted responses, enabling cache poisoning, potential phishing, and redirecting users to malicious domains.

AnalysisAI

Smart Visu Server Firmware contains a vulnerability that allows attackers to override request URLs by injecting arbitrary values in the X-Forwarded-Host head (CVSS 8.8).

Technical ContextAI

affects Smart Visu Server Firmware. JUNG Smart Visu Server 1.1.1050 contains a request header manipulation vulnerability that allows unauthenticated attackers to override request URLs by injecting arbitrary values in the X-Forwarded-Host header. Attackers can manipulate proxied requests to generate tainted responses, enabling cache poisoning, potential phishing, and redirecting users to malicious domains.