When a WSO2 product is configured to use an external user store, the system fails to adequately obscure the existence or validity of usernames during authentication attempts. This oversight allows an attacker to repeatedly query the authentication mechanism with different username guesses, enabling the enumeration of valid usernames present in the external user store.

The discovery of valid usernames can increase the risk of targeted brute-force attacks, social engineering, and information leakage. Attackers can leverage this information to craft more convincing phishing campaigns or other social engineering tactics to trick users into revealing sensitive data. The presence of username enumeration could also negatively impact an organization's reputation, leading to loss of customer trust, regulatory non-compliance, and potential legal and financial repercussions.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
WSO2 WSO2 API Manager unaffected
Version Status Constraints
0 unknown < 3.1.0
3.1.0 affected < 3.1.0.310
3.2.0 affected < 3.2.0.401
3.2.1 affected < 3.2.1.26
4.0.0 affected < 4.0.0.318
4.1.0 affected < 4.1.0.180
4.2.0 affected < 4.2.0.119
4.3.0 affected < 4.3.0.30
WSO2 WSO2 Identity Server as Key Manager unaffected
Version Status Constraints
0 unknown < 5.10.0
5.10.0 affected < 5.10.0.320
WSO2 WSO2 Identity Server unaffected
Version Status Constraints
0 unknown < 5.10.0
5.10.0 affected < 5.10.0.326
6.0.0 affected < 6.0.0.214
6.1.0 affected < 6.1.0.198
7.0.0 affected < 7.0.0.67
WSO2 WSO2 Open Banking IAM unaffected
Version Status Constraints
0 unknown < 2.0.0
2.0.0 affected < 2.0.0.371
WSO2 WSO2 Open Banking AM unaffected
Version Status Constraints
0 unknown < 2.0.0
2.0.0 affected < 2.0.0.351
WSO2 WSO2 Carborn Identity Handler unknown
Version Status Constraints
1.4.0 affected < 1.4.0.15
1.4.0 affected < 1.4.0.16
1.4.11 affected < 1.4.11.14
1.4.37 affected < 1.4.37.1
1.6.1 affected < 1.6.1.5
1.7.1 affected < 1.7.1.1
1.8.6 affected < 1.8.6.5
1.8.14 affected < 1.8.14.1
1.9.2 affected < 1.9.2.4

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Project Subscriptions

Vendors Products
Wso2 Subscribe
Wso2 Api Manager Subscribe
Wso2 Carborn Identity Handler Subscribe
Wso2 Identity Server Subscribe
Wso2 Identity Server As Key Manager Subscribe
Wso2 Open Banking Am Subscribe
Wso2 Open Banking Iam Subscribe
Advisories

No advisories yet.

Fixes

Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3606/#solution

Workaround

No workaround given by the vendor.

References
Link Providers
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3606/ cve-icon cve-icon
History

Wed, 21 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
Description When a WSO2 product is configured to use an external user store, the system fails to adequately obscure the existence or validity of usernames during authentication attempts. This oversight allows an attacker to repeatedly query the authentication mechanism with different username guesses, enabling the enumeration of valid usernames present in the external user store. The discovery of valid usernames can increase the risk of targeted brute-force attacks, social engineering, and information leakage. Attackers can leverage this information to craft more convincing phishing campaigns or other social engineering tactics to trick users into revealing sensitive data. The presence of username enumeration could also negatively impact an organization's reputation, leading to loss of customer trust, regulatory non-compliance, and potential legal and financial repercussions.
Title Username Enumeration via External User Stores in Multiple WSO2 Products Allows User Account Discovery
First Time appeared Wso2
Wso2 wso2 Api Manager
Wso2 wso2 Carborn Identity Handler
Wso2 wso2 Identity Server
Wso2 wso2 Identity Server As Key Manager
Wso2 wso2 Open Banking Am
Wso2 wso2 Open Banking Iam
Weaknesses CWE-204
CPEs cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carborn_identity_handler:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_identity_server_as_key_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_open_banking_am:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_open_banking_iam:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 wso2 Api Manager
Wso2 wso2 Carborn Identity Handler
Wso2 wso2 Identity Server
Wso2 wso2 Identity Server As Key Manager
Wso2 wso2 Open Banking Am
Wso2 wso2 Open Banking Iam
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published:

Updated: 2026-10-21T13:49:07.839Z

Reserved: 2024-08-05T07:38:19.343Z

Link: CVE-2024-7478

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-21T14:17:06.147

Modified: 2026-10-21T18:37:59.557

Link: CVE-2024-7478

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-21T19:15:16Z

Weaknesses