CVE-2026-102790: iCagenda stored XSS via URL-type event custom field

CVE-2026-102790 · Severity: info · Published 2026-10-28

iCagenda is an event management extension for the Joomla CMS used to create and manage calendar events on websites. A stored cross-site scripting vulnerability in the URL-type custom field allows attackers to inject malicious scripts that execute when other users view events, potentially leading to account hijacking, session theft, or malware distribution.

Vendors: Joomlic.

Quick answers

Is CVE-2026-102790 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102790 being exploited in the wild.
How severe is CVE-2026-102790?
Informational severity, published 28 October 2026.
Which products and versions are affected?
Joomlic Icagenda 3.2.1 to 4.0.16.
Is there a fix for CVE-2026-102790?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-102790 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-102790?
Check whether you run Joomlic Icagenda at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stored XSS flaw exists in iCagenda's handling of URL-type custom fields in event creation. The vulnerability allows authenticated or privileged users to inject malicious JavaScript through the custom field input, which is then stored and executed in the browsers of any user viewing the affected event. Exploitation requires the ability to create or edit events with custom fields.

Affected products

  • JoomliC iCagenda 3.2.1 to 4.0.16

References

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