astodon 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.
Configuration 1 (hide)
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21 Nov 2024, 08:09
| Type | Values Removed | Values Added |
|---|---|---|
| References | () http://www.openwall.com/lists/oss-security/2023/07/06/5 - Mailing List | |
| References | () https://github.com/mastodon/mastodon/commit/6d8e0fae3e96f3cf4febe03fa7fcf5b95ff761b2 - Patch, Third Party Advisory | |
| References | () https://github.com/mastodon/mastodon/releases/tag/v3.5.9 - Third Party Advisory | |
| References | () https://github.com/mastodon/mastodon/releases/tag/v4.0.5 - Third Party Advisory | |
| References | () https://github.com/mastodon/mastodon/releases/tag/v4.1.3 - Third Party Advisory | |
| References | () https://github.com/mastodon/mastodon/security/advisories/GHSA-ccm4-vgcc-73hp - Third Party Advisory | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.3 |
Published : 2023-07-06 19:15
Updated : 2024-11-21 08:09
NVD link : CVE-2023-36459
Mitre link : CVE-2023-36459
CVE.ORG link : CVE-2023-36459
JSON object : View
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')