CVE-2026-90899 Information disclosure in Easy Store extension for Joomla
Unauthenticated attackers can enumerate guest customers and harvest PII via an IDOR flaw in the Easy Store Joomla extension.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90899?
CVE-2026-90899 is a high-severity vulnerability in joomshaper.com Easy Store extension for Joomla, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Joomla Extension - joomshaper.com - Unauthenticated PII Exposure via IDOR in Guest Checkout in Easy Store extension 1.0.0-3.0.0 - The checkout.searchGuestUser endpoint allowed querying guest checkout records solely by supplying an email address. The server returned complete shipping details (full name, phone number, street address, city, postal code, and country) directly from the #__easystore_guests table with no authentication, session validation, or ownership checks. An unauthenticated attacker could iterate through email lists to enumerate guest customers and harvest sensitive Personally Identifiable Information (PII). Resolved by removing the unauthenticated server-side guest lookup endpoint entirely and migrating autofill functionality to client-side localStorage protected by explicit user consent.
Which versions are affected by CVE-2026-90899?
How do I fix CVE-2026-90899?
No fix has been published for CVE-2026-90899 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-90899 being exploited?
There is no known exploitation of CVE-2026-90899 in the wild and no public exploit code.
Sources
Also known as GHSA-8fmf-2g9r-wwrq.