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    6 vulnerabilities by FriendsOfFlarum

    CVE-2026-92161 (GCVE-0-2026-92161)

    Vulnerability from nvd – Published: 2026-09-25 15:53 – Updated: 2026-09-29 19:21
    VLAI
    Title
    FriendsOfFlarum OAuth: Unauthenticated account takeover via unverified email trust in Discord OAuth provider
    Summary
    FriendsOfFlarum OAuth allows users to log in to Flarum with GitHub, Twitter, Facebook, and other providers. Prior to 1.7.4 and 2.0.0-beta.4, the Discord OAuth provider does not check the verified field returned for an OAuth email before passing the address to Flarum core as trusted through provideTrustedEmail(). When Discord sign-in is enabled, an unauthenticated attacker who knows the email address of a Flarum user can configure a Discord account with that unverified address and a verified phone number, then sign in to cause Flarum to match the trusted address, link the attacker-controlled Discord identity to the existing user, and authenticate as the victim without a password or victim interaction. Exploitation requires that the victim's email address is not already associated with a Discord account, and it can compromise administrator accounts. Other bundled providers were not confirmed to be practically exploitable by this method because their relevant authentication flows return only verified or confirmed email addresses. This issue is fixed in versions 1.7.4 and 2.0.0-beta.4.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-29 19:20 UTC
    CWE
    • CWE-345 - Insufficient Verification of Data Authenticity
    Impacted products
    Vendor Product Version
    FriendsOfFlarum oauth Affected: < 1.7.4
    Affected: >= 2.0.0-beta.1, < 2.0.0-beta.4
    Create a notification for this product.
    Show details on NVD website

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    CVE-2022-35921 (GCVE-0-2022-35921)

    Vulnerability from nvd – Published: 2022-08-01 21:50 – Updated: 2025-04-23 17:54
    VLAI
    Title
    User preference to prevent private discussions not respected in fof/byobu
    Summary
    fof/byobu is a private discussions extension for Flarum forum. Affected versions were found to not respect private discussion disablement by users. Users of Byobu should update the extension to version 1.1.7, where this has been patched. Users of Byobu with Flarum 1.0 or 1.1 should upgrade to Flarum 1.2 or later, or evaluate the impact this issue has on your forum's users and choose to disable the extension if needed. There are no workarounds for this issue.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-04-23 14:02 UTC
    CWE
    • CWE-269 - Improper Privilege Management
    References
    Impacted products
    Vendor Product Version
    FriendsOfFlarum byobu Affected: >=0.3.0-beta.2, < 1.1.7
    Create a notification for this product.
    Show details on NVD website

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    CVE-2022-30999 (GCVE-0-2022-30999)

    Vulnerability from nvd – Published: 2022-05-25 21:30 – Updated: 2025-04-22 17:56
    VLAI
    Title
    Possible cross-site scripting attack via unsanitized SVG files in FoF Upload
    Summary
    FriendsofFlarum (FoF) Upload is an extension that handles file uploads intelligently for your forum. If FoF Upload prior to version 1.2.3 is configured to allow the uploading of SVG files ('image/svg+xml'), navigating directly to an SVG file URI could execute arbitrary Javascript code decided by an attacker. This Javascript code could include the execution of HTTP web requests to Flarum, or any other web service. This could allow data to be leaked by an authenticated Flarum user, or, possibly, for data to be modified maliciously. This issue has been patched with v1.2.3, which now sanitizes uploaded SVG files. As a workaround, remove the ability for users to upload SVG files through FoF Upload.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-04-22 15:43 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Impacted products
    Vendor Product Version
    FriendsOfFlarum upload Affected: < 1.2.3
    Create a notification for this product.
    Show details on NVD website

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    CVE-2026-92161 (GCVE-0-2026-92161)

    Vulnerability from cvelistv5 – Published: 2026-09-25 15:53 – Updated: 2026-09-29 19:21
    VLAI
    Title
    FriendsOfFlarum OAuth: Unauthenticated account takeover via unverified email trust in Discord OAuth provider
    Summary
    FriendsOfFlarum OAuth allows users to log in to Flarum with GitHub, Twitter, Facebook, and other providers. Prior to 1.7.4 and 2.0.0-beta.4, the Discord OAuth provider does not check the verified field returned for an OAuth email before passing the address to Flarum core as trusted through provideTrustedEmail(). When Discord sign-in is enabled, an unauthenticated attacker who knows the email address of a Flarum user can configure a Discord account with that unverified address and a verified phone number, then sign in to cause Flarum to match the trusted address, link the attacker-controlled Discord identity to the existing user, and authenticate as the victim without a password or victim interaction. Exploitation requires that the victim's email address is not already associated with a Discord account, and it can compromise administrator accounts. Other bundled providers were not confirmed to be practically exploitable by this method because their relevant authentication flows return only verified or confirmed email addresses. This issue is fixed in versions 1.7.4 and 2.0.0-beta.4.
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-29 19:20 UTC
    CWE
    • CWE-345 - Insufficient Verification of Data Authenticity
    Impacted products
    Vendor Product Version
    FriendsOfFlarum oauth Affected: < 1.7.4
    Affected: >= 2.0.0-beta.1, < 2.0.0-beta.4
    Create a notification for this product.
    Show details on NVD website

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    CVE-2022-35921 (GCVE-0-2022-35921)

    Vulnerability from cvelistv5 – Published: 2022-08-01 21:50 – Updated: 2025-04-23 17:54
    VLAI
    Title
    User preference to prevent private discussions not respected in fof/byobu
    Summary
    fof/byobu is a private discussions extension for Flarum forum. Affected versions were found to not respect private discussion disablement by users. Users of Byobu should update the extension to version 1.1.7, where this has been patched. Users of Byobu with Flarum 1.0 or 1.1 should upgrade to Flarum 1.2 or later, or evaluate the impact this issue has on your forum's users and choose to disable the extension if needed. There are no workarounds for this issue.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-04-23 14:02 UTC
    CWE
    • CWE-269 - Improper Privilege Management
    References
    Impacted products
    Vendor Product Version
    FriendsOfFlarum byobu Affected: >=0.3.0-beta.2, < 1.1.7
    Create a notification for this product.
    Show details on NVD website

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    CVE-2022-30999 (GCVE-0-2022-30999)

    Vulnerability from cvelistv5 – Published: 2022-05-25 21:30 – Updated: 2025-04-22 17:56
    VLAI
    Title
    Possible cross-site scripting attack via unsanitized SVG files in FoF Upload
    Summary
    FriendsofFlarum (FoF) Upload is an extension that handles file uploads intelligently for your forum. If FoF Upload prior to version 1.2.3 is configured to allow the uploading of SVG files ('image/svg+xml'), navigating directly to an SVG file URI could execute arbitrary Javascript code decided by an attacker. This Javascript code could include the execution of HTTP web requests to Flarum, or any other web service. This could allow data to be leaked by an authenticated Flarum user, or, possibly, for data to be modified maliciously. This issue has been patched with v1.2.3, which now sanitizes uploaded SVG files. As a workaround, remove the ability for users to upload SVG files through FoF Upload.
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2025-04-22 15:43 UTC
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Impacted products
    Vendor Product Version
    FriendsOfFlarum upload Affected: < 1.2.3
    Create a notification for this product.
    Show details on NVD website

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          "title": "Possible cross-site scripting attack via unsanitized SVG files in FoF Upload",
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