# CVE-2026-102778: Event Gallery extension XSS and open redirect on share page

Source: https://junglewise.ai/threats/cve-2026-102778-joomla-extension-svenbluege-de-cross-site-scripting-and-open  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-05. Updated: 2026-10-05  
License: CC BY 4.0 with a link back

CVE-2026-102778 · Severity: info · Published 2026-10-05

Event Gallery is a Joomla image gallery component that lets users organize and share photos. A vulnerability in the share feature allows attackers to inject malicious scripts or redirect users to external websites through a crafted link, potentially stealing user session data or conducting phishing attacks.

Technologies: [Svenbluege.De Event Gallery](https://junglewise.ai/threats/technologies/event-gallery). Vendors: [Svenbluege.De](https://junglewise.ai/threats/vendors/svenbluege-de).

## Quick answers

**Is CVE-2026-102778 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102778 being exploited in the wild.

**How severe is CVE-2026-102778?** Informational severity, published 5 October 2026.

**Which products and versions are affected?** Svenbluege.De Event Gallery before 6.6.0.

**Is there a fix for CVE-2026-102778?** Yes: fixed in Event Gallery 6.6.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-102778 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-102778?** Check whether you run Svenbluege.De Event Gallery 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.

## How to fix

- Fixed in Event Gallery 6.6.0

## Technical details

The share mini page fails to sanitize or escape the article link parameter when the "Share article links" option is enabled, allowing stored XSS injection. With the "Image Page with Redirect" link type, unsanitized input is also followed as a redirect target. An attacker can craft a malicious share link that executes JavaScript in the victim's browser session or redirects them to an attacker-controlled site; no server-side data is compromised.

## Affected products

- svenbluege.de Event Gallery before 6.6.0

## Timeline

- 2026-10-05: disclosed

## References

- [https://www.svenbluege.de/](https://www.svenbluege.de/)

## Related threats

- [Event Gallery Google Photos picker SSRF in backend](https://junglewise.ai/threats/cve-2026-102777-joomla-extension-svenbluege-de-server-side-request-forgery-in)
- [Joomla Event Gallery extension CSRF of backend list tasks](https://junglewise.ai/threats/cve-2026-102776-joomla-extension-svenbluege-de-cross-site-request-forgery-of)
- [Event Gallery Joomla extension reflected XSS and open redirect](https://junglewise.ai/threats/cve-2026-97165-joomla-extension-svenbluege-de-reflected-xss-and-open-redirect-in)
- [Event Gallery authenticated arbitrary path deletion in cache task](https://junglewise.ai/threats/cve-2026-97164-joomla-extension-svenbluege-de-authenticated-arbitrary-path)
- [Joomla Event Gallery CSRF in backend cleanup actions](https://junglewise.ai/threats/cve-2026-100749-joomla-extension-svenbluege-de-csrf-in-backend-cleanup-actions)