What is CVE-2026-0521?

CVE-2026-0521 is a medium-severity vulnerability in Tydac Map\+, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-06.

How severe is CVE-2026-0521?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Tydac Map\+

CVE-2026-0521

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Tydac Map\+ — versions 3.4.0
Tydac Ag Map+ — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

vulnerability@ncsc.ch (Product, product)
vulnerability@ncsc.ch (Exploit, technical-description, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-0521?: CVE-2026-0521 is a medium-severity vulnerability in Tydac Map\+, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-06.
How severe is CVE-2026-0521?: Medium severity. CVSS v3 base score is 6.1 out of 10.