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    2 vulnerabilities by antonio-castellon

    CVE-2026-58399 (GCVE-0-2026-58399)

    Vulnerability from nvd – Published: 2026-07-01 14:25 – Updated: 2026-07-02 14:26
    VLAI
    Title
    @acastellon/auth has an authentication bypass via spoofable headers in validateToken()
    Summary
    @acastellon/auth is an authentication control system for microservices. Versions prior to 2.3.0 appear to allow an unauthenticated authentication bypass in validateToken() through spoofable auth-user and Host request headers. The validateToken middleware contains a service-to-service bypass for auth-user: service-brother when req.get('host').startsWith(getHostName()). Both values involved in the check can be influenced by an unauthenticated HTTP client: auth-user is a request header, and Host is also client-controlled. As a result, a remote unauthenticated attacker can send a request with crafted headers and bypass token validation before the normal legacy/JWT/OIDC validation logic runs. A fix has been implemented in v2.3.0.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-58399",
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                "timestamp": "2026-07-02T14:25:47.187429Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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        {
          "product": "module-auth",
          "vendor": "antonio-castellon",
          "versions": [
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      ],
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      "title": "@acastellon/auth has an authentication bypass via spoofable headers in validateToken()"
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    "datePublished": "2026-07-01T14:25:44.452Z",
    "dateReserved": "2026-06-30T18:19:58.378Z",
    "dateUpdated": "2026-07-02T14:26:00.684Z",
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    CVE-2026-58399 (GCVE-0-2026-58399)

    Vulnerability from cvelistv5 – Published: 2026-07-01 14:25 – Updated: 2026-07-02 14:26
    VLAI
    Title
    @acastellon/auth has an authentication bypass via spoofable headers in validateToken()
    Summary
    @acastellon/auth is an authentication control system for microservices. Versions prior to 2.3.0 appear to allow an unauthenticated authentication bypass in validateToken() through spoofable auth-user and Host request headers. The validateToken middleware contains a service-to-service bypass for auth-user: service-brother when req.get('host').startsWith(getHostName()). Both values involved in the check can be influenced by an unauthenticated HTTP client: auth-user is a request header, and Host is also client-controlled. As a result, a remote unauthenticated attacker can send a request with crafted headers and bypass token validation before the normal legacy/JWT/OIDC validation logic runs. A fix has been implemented in v2.3.0.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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          "vendor": "antonio-castellon",
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