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    CVE-2024-32983

    Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.

    Published:Jun 3, 2024
    Last Modified:Nov 25, 2025
    EPS:Jun 3, 2024
    EPSS Score:0.00144
    CVSS Score:8.2

    Affected Products

    Vendor
    Misskey
    Product
    Misskey

    Exploits

    https://github.com/misskey-dev/misskey/security/advisories/GHSA-2vxv-pv3m-3wvjhttps://github.com/misskey-dev/misskey/security/advisories/GHSA-2vxv-pv3m-3wvj

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-46714 (CVSS 5.1) — Misskey is an open source, federated social media platform. IVersions 8.63.0 and later, but prior to 2026.5.4,…
    CVE-2026-47746 (CVSS 8.9) — Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4,…
    CVE-2026-46713 (CVSS 9.2) — Misskey is an open source, federated social media platform. Versions 12.37.0 and later, but prior to 2026.5.4,…
    CVE-2026-46712 (CVSS 2.3) — Misskey is an open source, federated social media platform. Versions 2025.3.2 and later, but prior to 2026.5.4…
    CVE-2026-48115 (CVSS 6.3) — Misskey is an open source, federated social media platform. All Misskey servers running versions 2024.5.0 and …
    CVE-2026-57574 (CVSS 7.4) — Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a vulnerabilit…
    CVE-2026-57575 (CVSS 6.9) — Misskey is an open source, federated social media platform. Prior to 2026.6.0, Misskey contains a Server-Side …
    CVE-2026-28433 (CVSS 2.3) — Misskey is an open source, federated social media platform. All Misskey servers running versions 10.93.0 and l…
    CVE-2026-28432 (CVSS 7.1) — Misskey is an open source, federated social media platform. All Misskey servers prior to 2026.3.1 contain a vu…
    CVE-2026-28431 (CVSS 9.2) — Misskey is an open source, federated social media platform. All Misskey servers running versions 8.45.0 and la…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High