langgenius dify up to 1.8.x Dify API response discrepancy

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in langgenius dify up to 1.8.x. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component Dify API. The manipulation leads to response discrepancy. This vulnerability is uniquely identified as CVE-2026-28288. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in langgenius dify up to 1.8.x. It has been rated as problematic. This issue affects an unknown code block of the component Dify API. The manipulation with an unknown input leads to a response discrepancy vulnerability. Using CWE to declare the problem leads to CWE-204. The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. Impacted is confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-28288 since 02/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 1.9.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-9068). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Response discrepancy
CWE: CWE-204 / CWE-203 / CWE-200
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: dify 1.9.0

Timelineinfo

02/26/2026 CVE reserved
02/27/2026 +1 days Advisory disclosed
02/27/2026 +0 days VulDB entry created
03/10/2026 +11 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 24323
Status: Confirmed

CVE: CVE-2026-28288 (🔒)
GCVE (CVE): GCVE-0-2026-28288
GCVE (VulDB): GCVE-100-348227
EUVD: 🔒

Entryinfo

Created: 02/27/2026 22:23
Updated: 03/10/2026 01:59
Changes: 02/27/2026 22:23 (67), 02/28/2026 23:07 (1), 03/01/2026 18:26 (1), 03/10/2026 01:59 (11)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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