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    6 vulnerabilities by PoxenStudio

    CVE-2026-45274 (GCVE-0-2026-45274)

    Vulnerability from nvd – Published: 2026-08-19 14:38 – Updated: 2026-08-19 15:23
    VLAI
    Title
    MyBooks: Unauthenticated Registration Bypass via Missing Server-Side ALLOW_REGISTER Enforcement
    Summary
    MyBooks is anebook management web server also known as Talebook. In 3.41.2 and earlier, the SignUp.post handler for POST /api/user/sign_up in webserver/handlers/user.py does not enforce the ALLOW_REGISTER configuration flag, even though the frontend hides registration controls when the flag is false. An unauthenticated remote attacker can call the endpoint directly and create a valid account on an instance whose administrator disabled public registration. The process_auth_header function in webserver/handlers/base.py also does not verify the account's active flag, so the newly created and unactivated account can authenticate immediately and access user-level API functionality. The bypass defeats the intended account-creation policy and can supply the low-privilege account required by related authorization vulnerabilities. This issue is fixed in version 3.42.0.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-19 15:22 UTC
    CWE
    • CWE-602 - Client-Side Enforcement of Server-Side Security
    Assigner
    References
    Impacted products
    Vendor Product Version
    PoxenStudio talebook Affected: < 3.42.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45273 (GCVE-0-2026-45273)

    Vulnerability from nvd – Published: 2026-08-19 14:37 – Updated: 2026-08-19 18:32
    VLAI
    Title
    MyBooks: Privilege Escalation via Missing Authorization on Admin Settings Endpoint
    Summary
    MyBooks is an ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler for POST /api/admin/settings in webserver/handlers/admin.py applies the auth decorator but does not check the self.admin_user property, unlike the corresponding GET handler. Any authenticated regular user can therefore overwrite server configuration values including SMTP credentials, OAuth client secrets, storage paths, security feature flags, and autoreload settings. The process_auth_header function in webserver/handlers/base.py also fails to verify the matched account's active flag, allowing a registered but unactivated account to authenticate and reach the vulnerable handler. Exploitation can disclose secrets through configuration access paths, sabotage application behavior, force service restarts, and supply the settings needed for related code-injection attacks. This issue is fixed in version 3.42.0.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-19 18:32 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    PoxenStudio talebook Affected: < 3.42.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45272 (GCVE-0-2026-45272)

    Vulnerability from nvd – Published: 2026-08-19 14:39 – Updated: 2026-08-19 18:19
    VLAI
    Title
    MyBooks: Remote Code Execution via SOCIAL_AUTH Key Name Injection in Python Config File
    Summary
    MyBooks is an enhanced and easy-to-use personal ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler in webserver/handlers/admin.py accepts SOCIAL_AUTH key names without validating quotes or newline characters, and SettingsLoader.dumpfile in webserver/loader.py concatenates those names into the generated Python source file auto.py without escaping them. An administrator can submit a crafted SOCIAL_AUTH key name that closes the settings dictionary and injects arbitrary Python statements. The application later executes those statements because SettingsLoader.loadfile imports auto.py as a module, and setting autoreload to true invokes restart_async so a process supervisor restarts the service and triggers the import. Successful exploitation executes commands with the privileges of the application service account and can disclose data, modify files, establish persistence, or disrupt the service. Related authorization and registration vulnerabilities can reduce the effective privilege requirement in a chained attack, but the standalone vulnerability requires administrator access. This issue is fixed in version 3.42.0.
    Severity
    9.4 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-19 18:16 UTC
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
    Assigner
    References
    Impacted products
    Vendor Product Version
    PoxenStudio talebook Affected: < 3.42.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45272 (GCVE-0-2026-45272)

    Vulnerability from cvelistv5 – Published: 2026-08-19 14:39 – Updated: 2026-08-19 18:19
    VLAI
    Title
    MyBooks: Remote Code Execution via SOCIAL_AUTH Key Name Injection in Python Config File
    Summary
    MyBooks is an enhanced and easy-to-use personal ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler in webserver/handlers/admin.py accepts SOCIAL_AUTH key names without validating quotes or newline characters, and SettingsLoader.dumpfile in webserver/loader.py concatenates those names into the generated Python source file auto.py without escaping them. An administrator can submit a crafted SOCIAL_AUTH key name that closes the settings dictionary and injects arbitrary Python statements. The application later executes those statements because SettingsLoader.loadfile imports auto.py as a module, and setting autoreload to true invokes restart_async so a process supervisor restarts the service and triggers the import. Successful exploitation executes commands with the privileges of the application service account and can disclose data, modify files, establish persistence, or disrupt the service. Related authorization and registration vulnerabilities can reduce the effective privilege requirement in a chained attack, but the standalone vulnerability requires administrator access. This issue is fixed in version 3.42.0.
    Severity
    9.4 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-19 18:16 UTC
    CWE
    • CWE-94 - Improper Control of Generation of Code ('Code Injection')
    • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
    Assigner
    References
    Impacted products
    Vendor Product Version
    PoxenStudio talebook Affected: < 3.42.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45274 (GCVE-0-2026-45274)

    Vulnerability from cvelistv5 – Published: 2026-08-19 14:38 – Updated: 2026-08-19 15:23
    VLAI
    Title
    MyBooks: Unauthenticated Registration Bypass via Missing Server-Side ALLOW_REGISTER Enforcement
    Summary
    MyBooks is anebook management web server also known as Talebook. In 3.41.2 and earlier, the SignUp.post handler for POST /api/user/sign_up in webserver/handlers/user.py does not enforce the ALLOW_REGISTER configuration flag, even though the frontend hides registration controls when the flag is false. An unauthenticated remote attacker can call the endpoint directly and create a valid account on an instance whose administrator disabled public registration. The process_auth_header function in webserver/handlers/base.py also does not verify the account's active flag, so the newly created and unactivated account can authenticate immediately and access user-level API functionality. The bypass defeats the intended account-creation policy and can supply the low-privilege account required by related authorization vulnerabilities. This issue is fixed in version 3.42.0.
    Severity
    6.9 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-19 15:22 UTC
    CWE
    • CWE-602 - Client-Side Enforcement of Server-Side Security
    Assigner
    References
    Impacted products
    Vendor Product Version
    PoxenStudio talebook Affected: < 3.42.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45273 (GCVE-0-2026-45273)

    Vulnerability from cvelistv5 – Published: 2026-08-19 14:37 – Updated: 2026-08-19 18:32
    VLAI
    Title
    MyBooks: Privilege Escalation via Missing Authorization on Admin Settings Endpoint
    Summary
    MyBooks is an ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler for POST /api/admin/settings in webserver/handlers/admin.py applies the auth decorator but does not check the self.admin_user property, unlike the corresponding GET handler. Any authenticated regular user can therefore overwrite server configuration values including SMTP credentials, OAuth client secrets, storage paths, security feature flags, and autoreload settings. The process_auth_header function in webserver/handlers/base.py also fails to verify the matched account's active flag, allowing a registered but unactivated account to authenticate and reach the vulnerable handler. Exploitation can disclose secrets through configuration access paths, sabotage application behavior, force service restarts, and supply the settings needed for related code-injection attacks. This issue is fixed in version 3.42.0.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-19 18:32 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    PoxenStudio talebook Affected: < 3.42.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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