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Vulnerability Details :

CVE-2026-24468

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-20 Apr, 2026 | 15:45
Updated At-20 Apr, 2026 | 16:24
Rejected At-
Credits

OpenAEV Vulnerable to Username/Email Enumeration Through Differential HTTP Responses in Password Reset API

OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Starting in version 1.11.0 and prior to version 2.0.13, the /api/reset endpoint behaves differently depending on whether the supplied username exists in the system. When a non-existent email is provided in the login parameter, the endpoint returns an HTTP 400 response (Bad Request). When a valid email is supplied, the endpoint responds with HTTP 200. This difference in server responses creates an observable discrepancy that allows an attacker to reliably determine which emails are registered in the application. By automating requests with a list of possible email addresses, an attacker can quickly build a list of valid accounts without any authentication. The endpoint should return a consistent response regardless of whether the username exists in order to prevent account enumeration. Version 2.0.13 fixes this issue.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:20 Apr, 2026 | 15:45
Updated At:20 Apr, 2026 | 16:24
Rejected At:
▼CVE Numbering Authority (CNA)
OpenAEV Vulnerable to Username/Email Enumeration Through Differential HTTP Responses in Password Reset API

OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Starting in version 1.11.0 and prior to version 2.0.13, the /api/reset endpoint behaves differently depending on whether the supplied username exists in the system. When a non-existent email is provided in the login parameter, the endpoint returns an HTTP 400 response (Bad Request). When a valid email is supplied, the endpoint responds with HTTP 200. This difference in server responses creates an observable discrepancy that allows an attacker to reliably determine which emails are registered in the application. By automating requests with a list of possible email addresses, an attacker can quickly build a list of valid accounts without any authentication. The endpoint should return a consistent response regardless of whether the username exists in order to prevent account enumeration. Version 2.0.13 fixes this issue.

Affected Products
Vendor
OpenAEV-Platform
Product
openaev
Versions
Affected
  • >= 1.11.0, < 2.0.13
Problem Types
TypeCWE IDDescription
CWECWE-204CWE-204: Observable Response Discrepancy
Type: CWE
CWE ID: CWE-204
Description: CWE-204: Observable Response Discrepancy
Metrics
VersionBase scoreBase severityVector
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/OpenAEV-Platform/openaev/security/advisories/GHSA-v6rg-hf9w-f8ph
x_refsource_CONFIRM
https://github.com/OpenAEV-Platform/openaev/commit/3430fe23a9244030d06fdf8e6771592e1f12ad52
x_refsource_MISC
https://github.com/OpenAEV-Platform/openaev/blob/82fa7d0009017110c9b509d0dc1b3a78164259dd/openaev-api/src/main/java/io/openaev/rest/user/UserApi.java#L120
x_refsource_MISC
https://github.com/OpenAEV-Platform/openaev/releases/tag/2.0.13
x_refsource_MISC
Hyperlink: https://github.com/OpenAEV-Platform/openaev/security/advisories/GHSA-v6rg-hf9w-f8ph
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/OpenAEV-Platform/openaev/commit/3430fe23a9244030d06fdf8e6771592e1f12ad52
Resource:
x_refsource_MISC
Hyperlink: https://github.com/OpenAEV-Platform/openaev/blob/82fa7d0009017110c9b509d0dc1b3a78164259dd/openaev-api/src/main/java/io/openaev/rest/user/UserApi.java#L120
Resource:
x_refsource_MISC
Hyperlink: https://github.com/OpenAEV-Platform/openaev/releases/tag/2.0.13
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:20 Apr, 2026 | 16:16
Updated At:20 Apr, 2026 | 18:59

OpenAEV is an open source platform allowing organizations to plan, schedule and conduct cyber adversary simulation campaign and tests. Starting in version 1.11.0 and prior to version 2.0.13, the /api/reset endpoint behaves differently depending on whether the supplied username exists in the system. When a non-existent email is provided in the login parameter, the endpoint returns an HTTP 400 response (Bad Request). When a valid email is supplied, the endpoint responds with HTTP 200. This difference in server responses creates an observable discrepancy that allows an attacker to reliably determine which emails are registered in the application. By automating requests with a list of possible email addresses, an attacker can quickly build a list of valid accounts without any authentication. The endpoint should return a consistent response regardless of whether the username exists in order to prevent account enumeration. Version 2.0.13 fixes this issue.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-204Primarysecurity-advisories@github.com
CWE ID: CWE-204
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/OpenAEV-Platform/openaev/blob/82fa7d0009017110c9b509d0dc1b3a78164259dd/openaev-api/src/main/java/io/openaev/rest/user/UserApi.java#L120security-advisories@github.com
N/A
https://github.com/OpenAEV-Platform/openaev/commit/3430fe23a9244030d06fdf8e6771592e1f12ad52security-advisories@github.com
N/A
https://github.com/OpenAEV-Platform/openaev/releases/tag/2.0.13security-advisories@github.com
N/A
https://github.com/OpenAEV-Platform/openaev/security/advisories/GHSA-v6rg-hf9w-f8phsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/OpenAEV-Platform/openaev/blob/82fa7d0009017110c9b509d0dc1b3a78164259dd/openaev-api/src/main/java/io/openaev/rest/user/UserApi.java#L120
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/OpenAEV-Platform/openaev/commit/3430fe23a9244030d06fdf8e6771592e1f12ad52
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/OpenAEV-Platform/openaev/releases/tag/2.0.13
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/OpenAEV-Platform/openaev/security/advisories/GHSA-v6rg-hf9w-f8ph
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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User enumeration vulnerability in MB connect line and Helmholz products

A remote, unauthenticated attacker can enumerate valid users by sending specific requests to the webservice of MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2.

Action-Not Available
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