CVE-2026-19657 ScadaLTS Unauthenticated Reflected XSS
An unauthenticated attacker can execute arbitrary JavaScript in a victim's browser via a crafted URL in ScadaLTS, potentially leading to session hijacking.
- 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-2026-19657?
CVE-2026-19657 is a medium-severity cross-site scripting vulnerability in SCADA-LTS ScadaLTS, published on 12 Aug 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
ScadaLTS 2.7.8.1 reflects user-supplied input into an HTML response without sanitization. An unauthenticated attacker who lures a victim into visiting a crafted URL can execute arbitrary JavaScript in the context of the victim's browser session.
Weakness: CWE-79
Which versions are affected by CVE-2026-19657?
It affects 1 product.
Products include Scada-Lts Scada-Lts.
How do I fix CVE-2026-19657?
No fix has been published for CVE-2026-19657 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-19657 being exploited?
There is no known exploitation of CVE-2026-19657 in the wild and no public exploit code.
Other vulnerabilities in SCADA-LTS ScadaLTS
Sources
Also known as GHSA-cq6c-v5w8-x82x.