CVE-2026-26234 JUNG Smart Visu Server - Improper Neutralization of HTTP Headers for Scripting Syntax
Unauthenticated attackers can manipulate X-Forwarded-Host headers to redirect users to malicious domains, enabling phishing and cache poisoning attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-26234?
CVE-2026-26234 is a high-severity vulnerability in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Visu Server, published on 12 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-644
Which versions are affected by CVE-2026-26234?
It affects 1 product.
Products include Jung-Group Smart Visu Server Firmware.
How do I fix CVE-2026-26234?
No fix has been published for CVE-2026-26234 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-26234 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-26234 exists.
Other vulnerabilities in ALBRECHT JUNG GMBH & CO. KG JUNG Smart Visu Server
Sources
Also known as GHSA-9f79-6fpr-26f7.