Plattform
php
Komponente
web-totum
Behoben in
2026.0.1
A cross-site scripting (XSS) vulnerability has been identified in WebSystems WebTOTUM version 2026. This flaw impacts the Calendar component, allowing attackers to inject malicious scripts into web pages viewed by other users. The vulnerability is remotely exploitable and has been publicly disclosed. Upgrading to the latest version is the recommended solution.
Successful exploitation of CVE-2026-6743 allows an attacker to execute arbitrary JavaScript code within the context of a user's browser session. This can lead to a variety of malicious actions, including session hijacking, credential theft, and defacement of the web application. The attacker could potentially steal sensitive information like user login credentials or redirect users to phishing sites. The blast radius extends to all users who interact with the Calendar component, potentially compromising the entire application if user input is not properly sanitized.
This vulnerability has been publicly disclosed, increasing the risk of exploitation. While the CVSS score is LOW, the ease of exploitation and potential impact warrant immediate attention. No active exploitation campaigns or KEV listing have been observed as of the publication date. Public proof-of-concept code may be available or emerge soon.
Organizations using WebSystems WebTOTUM 2026, particularly those with publicly accessible Calendar components or those handling sensitive user data through the Calendar feature, are at risk. Shared hosting environments where multiple users share the same WebTOTUM instance are also at increased risk.
• php: Examine web application logs for suspicious JavaScript execution patterns or unusual HTTP requests targeting the Calendar component. • generic web: Use curl/wget to test the Calendar component for XSS vulnerabilities by injecting simple payloads into input fields.
curl -X POST "https://example.com/calendar/add_event.php?name=<script>alert('XSS')</script>"disclosure
patch
Exploit-Status
EPSS
0.03% (9% Perzentil)
CISA SSVC
CVSS-Vektor
The primary mitigation for CVE-2026-6743 is to upgrade WebSystems WebTOTUM to the fixed version 2026. If an immediate upgrade is not feasible, consider implementing input validation and output encoding on all user-supplied data used within the Calendar component. Web application firewalls (WAFs) configured to detect and block XSS payloads can provide an additional layer of defense. Thoroughly review and sanitize all user input before rendering it in the Calendar component.
Aktualisieren Sie das Component Calendar auf die korrigierte Version, die vom Vendor WebSystems bereitgestellt wird. Sehen Sie in der Dokumentation des Vendors oder auf deren Webseite nach, um spezifische Upgrade-Anweisungen zu erhalten.
Schwachstellenanalysen und kritische Warnungen direkt in deinen Posteingang.
CVE-2026-6743 is a cross-site scripting (XSS) vulnerability in WebSystems WebTOTUM 2026's Calendar component, allowing attackers to inject malicious scripts.
If you are using WebSystems WebTOTUM 2026, you are potentially affected. Upgrade to the fixed version to mitigate the risk.
Upgrade WebSystems WebTOTUM to the latest fixed version. Implement input validation and output encoding as a temporary workaround if upgrading is not immediately possible.
While no active campaigns have been confirmed, the public disclosure increases the risk of exploitation.
Refer to the WebSystems website or contact their support for the official advisory regarding CVE-2026-6743.
Lade deine Abhängigkeitsdatei hoch und erfahre sofort, ob dich diese und andere CVEs treffen.