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.
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History
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-07-06T18:29:07.669Z
Updated: 2024-08-02T16:45:57.102Z
Reserved: 2023-06-21T18:50:41.699Z
Link: CVE-2023-36459
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2023-07-06T19:15:10.727
Modified: 2023-07-14T19:33:36.027
Link: CVE-2023-36459
Redhat
No data.