Quick answers
- Is CVE-2026-76564 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-76564 being exploited in the wild.
- How severe is CVE-2026-76564?
- Informational severity, published 20 August 2026.
- Which products and versions are affected?
- Phoca.cz Phoca Cart 5.0.0 through 6.1.7.
- Is there a fix for CVE-2026-76564?
- 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-2026-76564 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-76564?
- Check whether you run Phoca.cz Phoca Cart 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 vulnerability exists in Phoca Cart versions 5.0.0 through 6.1.7 in the admin order view. The vulnerability stems from insufficient sanitization of the User-Agent header when orders are processed and displayed in the Joomla admin backend. An attacker can inject malicious JavaScript through the User-Agent header of an HTTP request, which is stored in the order and executed when an administrator views the order details. The attack requires no special privileges and can be triggered by making a purchase or order with a crafted User-Agent header. The injected script executes in the context of the admin user's session, potentially allowing full compromise of the Joomla instance.
Affected products
- phoca.cz Phoca Cart 5.0.0 through 6.1.7
Timeline
- 2026-08-20: disclosed