What is the CVSS score of CVE-2026-28288?

CVE-2026-28288 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of AI / ML are affected by CVE-2026-28288?

Organizations using Dify should be aware of moderate risk from CVE-2026-28288 rated CVSS 5.3. Exploitation could compromise the security of affected deployments.

Is there a public PoC exploit available for CVE-2026-28288?

Yes, a public proof-of-concept exploit is available for CVE-2026-28288. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-28288?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

AI / ML CVE-2026-28288

MEDIUM

Observable Response Discrepancy (CWE-204)

2026-02-27 security-advisories@github.com

Information Disclosure AI / ML Dify

5.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

5.3 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 09, 2026 - 20:23 vuln.today

Public exploit code

CVE Published

Feb 27, 2026 - 21:16 nvd

MEDIUM 5.3

DescriptionGitHub Advisory

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.

AnalysisAI

Dify versions prior to 1.9.0 leak information through inconsistent API responses that distinguish between registered and non-registered email addresses, enabling attackers to enumerate valid user accounts. Public exploit code exists for this vulnerability, and affected users should upgrade to version 1.9.0 or later to remediate the information disclosure risk.

Technical ContextAI

Affects Dify. 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.