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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (18.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Tydac Map\+ — versions 3.4.0
- Tydac Ag Map+ — versions 0
Weakness classification (CWE)
References
- www.tydac.ch/en/mapplus/ (Product, product)
- www.redguard.ch/blog/2026/02/05/advisory-tydac-mapplus/ (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.