BIT-mastodon-2023-36459

    Dashboard / Vulnerabilities / BIT-mastodon-2023-36459

    BIT-mastodon-2023-36459

    Published: 6 Mar 2024Last Modified: 10 Sept 2026

    Summary: Mastodon vulnerable to Cross-site Scripting through oEmbed preview cards

    Details: Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 1.3 and prior to versions 3.5.9, 4.0.5, and 4.1.3, an attacker using carefully crafted oEmbed data can bypass the HTML sanitization performed by Mastodon and include arbitrary HTML in oEmbed preview cards. This introduces a vector for cross-site scripting (XSS) payloads that can be rendered in the user's browser when a preview card for a malicious link is clicked through. 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/2023/07/06/5, https://github.com/mastodon/mastodon/commit/6d8e0fae3e96f3cf4febe03fa7fcf5b95ff761b2, 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/mastodon/mastodon/security/advisories/GHSA-ccm4-vgcc-73hp, https://nvd.nist.gov/vuln/detail/CVE-2023-36459

    Affected packages

    Package

    Name: mastodon

    Purl: pkg:bitnami/mastodon

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 1.3.0
    Fixed -3.5.9

    Affected versions

    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
    BIT-mastodon-2023-36459 | CVE-DB