CVE-2026-6743

LOW 3.5

WebSystems WebTOTUM Calendar cross site scripting

CVSS Score

3.5

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability has been found in WebSystems WebTOTUM 2026. This impacts an unknown function of the component Calendar. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CWE	CWE-79 CWE-94
Vendor	websystems
Product	webtotum
Published	Apr 21, 2026
Last Updated	Apr 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

WebSystems / WebTOTUM

2026

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/358434 vuldb.com: https://vuldb.com/vuln/358434/cti vuldb.com: https://vuldb.com/submit/794617 olografix.org: https://olografix.org/acme/WebTOTUM-POC.gif websys.eu: https://www.websys.eu/gestionale-online-in-cloud-per-pmi-callcenter

Credits

Andrea Intilangelo 🔍 acme (VulDB User) acme (VulDB User) VulDB CNA Team