CVE-2026-0521 Reflected Cross-Site Scripting in PDF Export Error Message
Unauthenticated attackers can execute arbitrary JavaScript in victims' browsers via a malicious URL in the PDF export feature.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-0521?
CVE-2026-0521 is a medium-severity cross-site scripting vulnerability in TYDAC AG MAP+, published on 6 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-0521?
It affects 1 product.
Products include Tydac Map\+.
How do I fix CVE-2026-0521?
No fix has been published for CVE-2026-0521 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-2026-0521 being exploited?
There is no known exploitation of CVE-2026-0521 in the wild and no public exploit code.
Sources
Also known as GHSA-74rw-28vp-8wh9.