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    2 vulnerabilities by presenton

    CVE-2026-58446 (GCVE-0-2026-58446)

    Vulnerability from nvd – Published: 2026-06-30 21:05 – Updated: 2026-07-14 21:35 X_Open Source
    VLAI
    Title
    Presenton < 0.8.8-beta - Authentication Bypass of Session Auth via Unprotected MCP Endpoint
    Summary
    Presenton before 0.8.8-beta bundles an MCP server that, on server/Docker deployments configured with session authentication (AUTH_USERNAME/AUTH_PASSWORD), is reachable unauthenticated at /mcp because the nginx front-end does not apply the auth_request gate to that path and the MCP server auto-mints a valid internal session token for the configured user. A remote unauthenticated attacker can invoke MCP tools such as generate_presentation, performing authenticated application actions, consuming the operators configured LLM API keys, and creating presentations in the operators instance. The Electron desktop build is not affected (MCP disabled).
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    presenton presenton Affected: 0 , < 0.8.8-beta (custom)
    		Create a notification for this product.
    Date Public
    2026-06-16 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

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        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
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    "dateReserved": "2026-06-30T19:09:07.025Z",
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}

    CVE-2026-58446 (GCVE-0-2026-58446)

    Vulnerability from cvelistv5 – Published: 2026-06-30 21:05 – Updated: 2026-07-14 21:35 X_Open Source
    VLAI
    Title
    Presenton < 0.8.8-beta - Authentication Bypass of Session Auth via Unprotected MCP Endpoint
    Summary
    Presenton before 0.8.8-beta bundles an MCP server that, on server/Docker deployments configured with session authentication (AUTH_USERNAME/AUTH_PASSWORD), is reachable unauthenticated at /mcp because the nginx front-end does not apply the auth_request gate to that path and the MCP server auto-mints a valid internal session token for the configured user. A remote unauthenticated attacker can invoke MCP tools such as generate_presentation, performing authenticated application actions, consuming the operators configured LLM API keys, and creating presentations in the operators instance. The Electron desktop build is not affected (MCP disabled).
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    presenton presenton Affected: 0 , < 0.8.8-beta (custom)
    		Create a notification for this product.
    Date Public
    2026-06-16 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

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      }
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