Dify is an open-source LLM app development platform.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Feb 27, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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

• cpe dify/difyversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-28288

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-28288

  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.

  nvd.nist.gov

References

• Issue Tracking · github.com
• Exploit · github.com