Vulnerability-Lookup

GHSA-C5G7-4966-GHVV

Vulnerability from github – Published: 2026-08-06 09:30 – Updated: 2026-08-06 09:30

Details

Successful exploitation allows an attacker to disclose personally identifiable information of users in different tenants, resulting in privacy violations and potential regulatory non-compliance. This may include unauthorized access to user details such as mobile numbers.

Severity

4.3 (Medium)


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

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  "affected": [],
  "aliases": [
    "CVE-2025-13909"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-06T08:16:28Z",
    "severity": "MODERATE"
  },
  "details": "The system accepts authentication requests without sufficient validation to enforce tenant isolation when using Email OTP, SMS OTP, or Magic Link as first-factor authenticators. This failure to adequately separate user data between tenants can lead to the exposure of personally identifiable information.\n\nSuccessful exploitation allows an attacker to disclose personally identifiable information of users in different tenants, resulting in privacy violations and potential regulatory non-compliance. This may include unauthorized access to user details such as mobile numbers.",
  "id": "GHSA-c5g7-4966-ghvv",
  "modified": "2026-08-06T09:30:31Z",
  "published": "2026-08-06T09:30:31Z",
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    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13909"
    },
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      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-13909 (GCVE-0-2025-13909)

Vulnerability from cvelistv5 – Published: 2026-08-06 07:33 – Updated: 2026-08-06 12:33

Title

Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure

Summary

The system accepts authentication requests without sufficient validation to enforce tenant isolation when using Email OTP, SMS OTP, or Magic Link as first-factor authenticators. This failure to adequately separate user data between tenants can lead to the exposure of personally identifiable information. Successful exploitation allows an attacker to disclose personally identifiable information of users in different tenants, resulting in privacy violations and potential regulatory non-compliance. This may include unauthorized access to user details such as mobile numbers.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-06 12:33 UTC

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
CWE-20 - Improper Input Validation

Assigner

WSO2 mitre root

References

1 reference

URL	Tags
https://security.docs.wso2.com/en/latest/security…	vendor-advisory

Impacted products

5 products

Vendor	Product	Version
WSO2	WSO2 Identity Server	Affected: 7.0.0 , < 7.0.0.134 (custom) Affected: 7.1.0 , < 7.1.0.42 (custom) cpe:2.3:a:wso2:wso2_identity_server:::::::: cpe:2.3:a:wso2:wso2_identity_server::::::::
WSO2	WSO2 Carbon Identity Application Authentication Framework	Affected: 7.0.78 , < 7.0.78.162 (custom) Affected: 7.8.23 , < 7.8.23.66 (custom) Unaffected: 7.8.550 , ≤ * (custom) cpe:2.3:a:wso2:wso2_carbon_identity_application_authentication_framework:::::::: cpe:2.3:a:wso2:wso2_carbon_identity_application_authentication_framework::::::::
WSO2	WSO2 Carbon MagicLink Authenticator Module	Affected: 1.1.22 , < 1.1.22.6 (custom) Affected: 1.1.31 , < 1.1.31.3 (custom) Unaffected: 1.1.45 , ≤ * (custom) cpe:2.3:a:wso2:wso2_carbon_magiclink_authenticator_module:::::::: cpe:2.3:a:wso2:wso2_carbon_magiclink_authenticator_module::::::::
WSO2	WSO2 Carbon Abstract OTP Authenticator	Affected: 1.0.5 , < 1.0.5.4 (custom) Affected: 1.0.10 , < 1.0.10.1 (custom) Unaffected: 1.0.24 , ≤ * (custom) cpe:2.3:a:wso2:wso2_carbon_abstract_otp_authenticator:::::::: cpe:2.3:a:wso2:wso2_carbon_abstract_otp_authenticator::::::::
WSO2	Email OTP Authenticator	Affected: 1.0.30 , < 1.0.30.4 (custom) Unaffected: 1.0.51 , ≤ * (custom) cpe:2.3:a:wso2:email_otp_authenticator::::::::

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JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.