CVE-2026-28288 Details.
Dify User Enumeration via Observable Response Discrepancy
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-28288. What It Means.
Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue.
Affected Product. What Is Hit.
The record for CVE-2026-28288 does not name a vendor or product yet.
References. Where To Read More.
FAQ
Common Questions.
Dify User Enumeration via Observable Response Discrepancy. Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue.
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-28288 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-28288 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update the affected software to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-28288. Atlas does not run a check for it, so nothing here says whether a particular site is affected.