Public vulnerability disclosure

CVE-2024-0391

CVE-2024-0391

publishedCWE-204

The check user account lock states feature within the email OTP flow fails to validate user input, allowing an attacker to infer the existence of registered user accounts. The discovery of valid usernames can increase the risk of brute-force and social engineering attacks. Attackers can leverage this information to craft targeted phishing campaigns or other malicious activities aimed at tricking users into divulging sensitive data, potentially damaging the organization's reputation and leading to regulatory non-compliance and financial consequences.

Technical severity4.3 mediumCVSS 3.1 · NVD: [email protected]
Published2026-05-11Source updated 2026-11-08
Collected2026-11-091 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
identity_server
wso2
≥ 5.10.0; < 5.10.0.379 (affected, custom) NVD
identity_server
wso2
≥ 5.11.0; < 5.11.0.426 (affected, custom) NVD
identity_server
wso2
≥ 6.0.0; < 6.0.0.253 (affected, custom) NVD
identity_server
wso2
≥ 6.1.0; < 6.1.0.254 (affected, custom) NVD
identity_server
wso2
≥ 7.0.0; < 7.0.0.131 (affected, custom) NVD
identity_server_as_key_manager
wso2
≥ 5.10.0; < 5.10.267 (affected, custom) NVD
open_banking_iam
wso2
≥ 2.0.0; < 2.0.0.318 (affected, custom) NVD

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

NVD applicability configurations (3)

These expressions retain AND/OR operators, negation, and required environmental products. A listed product is not sufficient to establish exposure when additional conditions apply.

[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "5.10.0.379",
            "versionStartIncluding": "5.10.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "5.11.0.426",
            "versionStartIncluding": "5.11.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.0.0.253",
            "versionStartIncluding": "6.0.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "6.1.0.254",
            "versionStartIncluding": "6.1.0",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "7.0.0.131",
            "versionStartIncluding": "7.0.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:wso2:identity_server_as_key_manager:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "5.10.267",
            "versionStartIncluding": "5.10.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:wso2:open_banking_iam:*:*:*:*:*:*:*:*",
            "versionEndExcluding": "2.0.0.318",
            "versionStartIncluding": "2.0.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  }
]

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 4.3
medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NNVD: [email protected]
3.1 / 5.3
medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NNVD: ed10eef1-636d-4fbe-9993-6890dfa878f8

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

For agents and automation

Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.

Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.

Endpoints and access details

https://api.y2.dev/api/v2/cyber/cves
https://api.y2.dev/api/v2/cyber/cves/{cveId}

A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.

For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.

Agent access JSON · OpenAPI · CVE API guide