CVE-2023-36460

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    CVE-2023-36460

    Published: 6 Jul 2023Last Modified: 12 Aug 2026

    Summary: Mastodon vulnerable to arbitrary file creation through media attachments

    Details: Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 3.5.0 and prior to versions 3.5.9, 4.0.5, and 4.1.3, attackers using carefully crafted media files can cause Mastodon's media processing code to create arbitrary files at any location. This allows attackers to create and overwrite any file Mastodon has access to, allowing Denial of Service and arbitrary Remote Code Execution. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this issue.

    References: http://www.openwall.com/lists/oss-security/2023/07/06/4, https://github.com/mastodon/mastodon/releases/tag/v3.5.9, https://github.com/mastodon/mastodon/releases/tag/v4.0.5, https://github.com/mastodon/mastodon/releases/tag/v4.1.3, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/36xxx/CVE-2023-36460.json, https://github.com/mastodon/mastodon/security/advisories/GHSA-9928-3cp5-93fm, https://nvd.nist.gov/vuln/detail/CVE-2023-36460, https://github.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 8c7223f4eac80b5725485be742d3fa2c984f4670
    Fixed -b10c974ba1952c545acff505bfd36feb0c60b000

    Affected versions

    v3.5.8
    v3.5.7
    v3.5.6
    v3.5.5
    v3.5.4
    v3.5.3
    v3.5.2
    v3.5.1
    v3.5.0

    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
    CVE-2023-36460 | CVE-DB