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    4 vulnerabilities by Spacebar Server

    CVE-2026-70618 (GCVE-0-2026-70618)

    Vulnerability from nvd – Published: 2026-08-05 19:57 – Updated: 2026-08-06 13:10 X_Open Source
    VLAI
    Title
    Spacebar Server Missing Authorization via member-ids Endpoint
    Summary
    Spacebar Server before commit 51da17c contains a missing authorization vulnerability that allows any authenticated user to enumerate complete guild membership by querying the GET /guilds/{guild_id}/roles/{role_id}/member-ids endpoint without guild membership verification. Attackers can exploit the unprotected route handler in the roles member-ids endpoint, which lacks permission checks present in sibling endpoints, to retrieve the full list of member user IDs for any guild on the instance using only a valid bearer token and a known guild ID.
    Severity
    5.3 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Spacebar Server Spacebar Server Affected: 0 , ≤ 51da17cf19d476483ee44e5f832d1ebdcd844f88 (git)
    		Create a notification for this product.
    Date Public
    2026-08-04 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

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    CVE-2026-70617 (GCVE-0-2026-70617)

    Vulnerability from nvd – Published: 2026-08-05 19:53 – Updated: 2026-08-06 18:07 X_Open Source
    VLAI
    Title
    Spacebar Server Missing Authorization via Group DM Recipient Endpoint
    Summary
    Spacebar Server before commit dcfd910 contains a missing authorization vulnerability that allows any authenticated attacker to add themselves to arbitrary group DM channels by sending a PUT request to the channels recipient endpoint without membership verification. Attackers can exploit the unguarded PUT /channels/{channel_id}/recipients/{user_id} handler to join private group DMs, read complete message history, post messages as a participant, and force-add third-party users without their consent.
    Severity
    8.6 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    8.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Spacebar Server Spacebar Server Affected: 0 , ≤ dcfd91035e3da42abf5f32d8d86a35219225b3d4 (git)
    		Create a notification for this product.
    Date Public
    2026-08-04 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

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    CVE-2026-70618 (GCVE-0-2026-70618)

    Vulnerability from cvelistv5 – Published: 2026-08-05 19:57 – Updated: 2026-08-06 13:10 X_Open Source
    VLAI
    Title
    Spacebar Server Missing Authorization via member-ids Endpoint
    Summary
    Spacebar Server before commit 51da17c contains a missing authorization vulnerability that allows any authenticated user to enumerate complete guild membership by querying the GET /guilds/{guild_id}/roles/{role_id}/member-ids endpoint without guild membership verification. Attackers can exploit the unprotected route handler in the roles member-ids endpoint, which lacks permission checks present in sibling endpoints, to retrieve the full list of member user IDs for any guild on the instance using only a valid bearer token and a known guild ID.
    Severity
    5.3 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Spacebar Server Spacebar Server Affected: 0 , ≤ 51da17cf19d476483ee44e5f832d1ebdcd844f88 (git)
    		Create a notification for this product.
    Date Public
    2026-08-04 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

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    CVE-2026-70617 (GCVE-0-2026-70617)

    Vulnerability from cvelistv5 – Published: 2026-08-05 19:53 – Updated: 2026-08-06 18:07 X_Open Source
    VLAI
    Title
    Spacebar Server Missing Authorization via Group DM Recipient Endpoint
    Summary
    Spacebar Server before commit dcfd910 contains a missing authorization vulnerability that allows any authenticated attacker to add themselves to arbitrary group DM channels by sending a PUT request to the channels recipient endpoint without membership verification. Attackers can exploit the unguarded PUT /channels/{channel_id}/recipients/{user_id} handler to join private group DMs, read complete message history, post messages as a participant, and force-add third-party users without their consent.
    Severity
    8.6 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
    8.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Spacebar Server Spacebar Server Affected: 0 , ≤ dcfd91035e3da42abf5f32d8d86a35219225b3d4 (git)
    		Create a notification for this product.
    Date Public
    2026-08-04 00:00
    Credits
    George Chen
    Show details on NVD website
    To clipboard 

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