BIT-MASTODON-2023-36462 Mastodon's verified profile links can be formatted in a misleading way

Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 2.6.0 and prior to versions 3.5.9, 4.0.5, and 4.1.3, an attacker can craft a verified profile link using specific formatting to conceal arbitrary parts of the link, enabling it to appear to link to a...

BIT-MASTODON-2023-42450 Mastodon Server-Side Request Forgery vulnerability

Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused deputy attacks if...

BIT-MASTODON-2023-42451 Mastodon Invalid Domain Name Normalization vulnerability

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0, under certain circumstances, attackers can exploit a flaw in domain name normalization to spoof domains they do not own. Versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0 contai...

BIT-MASTODON-2023-42452 Mastodon vulnerable to Stored XSS through the translation feature

Mastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.x branch prior to versions 4.0.10, 4.2.8, and 4.2.0, under certain conditions, attackers can abuse the translation feature to bypass the server-side HTML sanitization, allowing unescaped HTML to execu...

BIT-MASTODON-2024-23832 Mastodon Remote user impersonation and takeover

Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Due to insufficient origin validation in all Mastodon, attackers can impersonate and take over any remote account. Every Mastodon version prior to 3.5.17 is...

The vulnerability of the Media File Handler component in the web application used for deploying distributed social networks like Mastodon allows a malicious actor to create and re-record arbitrary files within the system.

The vulnerability of the Media File Handler component in the Mastodon web application arises due to a input validation error during the processing of directory traversal sequences. Exploiting this vulnerability allows an attacker to create and re-upload arbitrary files into the system using a...

CVE-2024-25623

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a Content-Type header value of the Activity Streams media type, which...

Design/Logic Flaw

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a Content-Type header value of the Activity Streams media type, which...

CVE-2024-25623

CVE-2024-25623 describes a lack of verification of the Activity Streams Content-Type when Mastodon fetches remote statuses, enabling impersonation of accounts on remote servers that allow registering and arbitrary user uploads. Affected versions are prior to 4.2.7, 4.1.15, 4.0.15, and 3.5.19. The...

CVE-2024-25623 Lack of media type verification of Activity Streams objects allows impersonation of remote accounts

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a Content-Type header value of the Activity Streams media type, which...

CVE-2024-25623 Lack of media type verification of Activity Streams objects allows impersonation of remote accounts

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a Content-Type header value of the Activity Streams media type, which...

CVE-2024-25623 Lack of media type verification of Activity Streams objects allows impersonation of remote accounts

Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.2.7, 4.1.15, 4.0.15, and 3.5.19, when fetching remote statuses, Mastodon doesn't check that the response from the remote server has a Content-Type header value of the Activity Streams media type, which...

Mastodon Code Issue Vulnerability

Mastodon is an open source social networking server based on ActivityPub. A code issue vulnerability exists in Mastodon v4.2.6 and earlier versions, which stems from obtaining remote state without checking whether the remote server's response has a header value...

CVE-2024-25619

Mastodon is a free, open-source social network server based on ActivityPub. When an OAuth Application is destroyed, the streaming server wasn't being informed that the Access Tokens had also been destroyed, this could have posed security risks to users by allowing an application to continue...

CVE-2024-25618

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon allows new identities from configured authentication providers CAS, SAML, OIDC to attach to existing local users with the same e-mail address. This results in a possible account takeover if the authentication...

Design/Logic Flaw

Mastodon is a free, open-source social network server based on ActivityPub. When an OAuth Application is destroyed, the streaming server wasn't being informed that the Access Tokens had also been destroyed, this could have posed security risks to users by allowing an application to continue...

Design/Logic Flaw

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon allows new identities from configured authentication providers CAS, SAML, OIDC to attach to existing local users with the same e-mail address. This results in a possible account takeover if the authentication...

CVE-2024-25619 Destroying OAuth Applications doesn't notify Streaming of Access Tokens being destroyed in mastodon

Mastodon is a free, open-source social network server based on ActivityPub. When an OAuth Application is destroyed, the streaming server wasn't being informed that the Access Tokens had also been destroyed, this could have posed security risks to users by allowing an application to continue...

CVE-2024-25619 Destroying OAuth Applications doesn't notify Streaming of Access Tokens being destroyed in mastodon

Mastodon is a free, open-source social network server based on ActivityPub. When an OAuth Application is destroyed, the streaming server wasn't being informed that the Access Tokens had also been destroyed, this could have posed security risks to users by allowing an application to continue...

CVE-2024-25619

CVE-2024-25619 affects Mastodon releases 4.2.6, 4.1.14, 4.0.14, and 3.5.18. Root cause: Doorkeeper’s relationship between Applications and Access Tokens used dependent: delete_all, so the after_commit callback on AccessTokenExtension did not fire, leaving the streaming server informed of destroye...