CVE-2026-18243 HP DesignJet T3500 - Potential Cross-Site Scripting (XSS)
Unauthenticated attackers can exploit XSS to view print job previews on HP DesignJet T3500 printers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-18243?
CVE-2026-18243 is a medium-severity cross-site scripting vulnerability in HP DesignJet T3500, published on 3 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Certain HP DesignJet products may be potentially vulnerable to cross-site scripting (XSS), which may allow unauthenticated HTTP requests to view print job previews.
Weakness: CWE-79
Which versions are affected by CVE-2026-18243?
How do I fix CVE-2026-18243?
No fix has been published for CVE-2026-18243 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-2026-18243 being exploited?
There is no known exploitation of CVE-2026-18243 in the wild and no public exploit code.
Sources
Also known as GHSA-fvf7-w3m5-7r54.