Vulnerability · Published Apr 1, 2026 · Assigned by NCSC.ch

CVE-2026-3877Reflected Cross-Site Scripting in Dashboard Search

High 7.3

In plain English

A high-severity cross-site scripting in VertiGIS FM from VertiGIS. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 4.0)7.3High

Exploit odds (30 days)0.2%top 91.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A reflected cross-site scripting (XSS) vulnerability in the dashboard search functionality of the VertiGIS FM solution allows attackers to craft a malicious URL, that if visited by an authenticated 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.

Affected products (as reported)

Vendor	Product	Versions
VertiGIS	VertiGIS FM	0 – before 10.13.403

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

References

https://www.redguard.ch/blog/2026/04/01/advisory-vertigis-vertigisfm/ third-party-advisory, technical-description