CVE-2025-54879 Mastodon e‑mail throttle misconfiguration allows unlimited email confirmations against unconfirmed emails

Mastodon is a free, open-source social network server based on ActivityPub Mastodon which facilitates LDAP configuration for authentication. In versions 3.1.5 through 4.2.24, 4.3.0 through 4.3.11 and 4.4.0 through 4.4.3, Mastodon's rate-limiting system has a critical configuration error where the...

CVE-2025-54879 Mastodon e‑mail throttle misconfiguration allows unlimited email confirmations against unconfirmed emails

Mastodon is a free, open-source social network server based on ActivityPub Mastodon which facilitates LDAP configuration for authentication. In versions 3.1.5 through 4.2.24, 4.3.0 through 4.3.11 and 4.4.0 through 4.4.3, Mastodon's rate-limiting system has a critical configuration error where the...

PT-2025-32007 · Mastodon · Mastodon

Name of the Vulnerable Software and Affected Versions: Mastodon versions 3.1.5 through 4.2.24 Mastodon versions 4.3.0 through 4.3.11 Mastodon versions 4.4.0 through 4.4.3 Description: Mastodon’s rate-limiting system contains a configuration error where the email-based throttle for confirmation...

CVE-2025-5689

creationtimestamp| type| source ---|---|--- 2025-06-16 12:42:54+00:00| published-proof-of-concept| https://t.me/DarkWebInformerCVEAlerts/18446 2025-06-16 19:42:38+00:00| seen| https://infosec.exchange/users/cR0w/statuses/114694747478598696 2025-06-16 19:47:13+00:00| seen|...

CVE-2025-5528

The Social Sharing Plugin – Sassy Social Share plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the heateormastodonshare parameter in all versions up to, and including, 3.3.75 due to insufficient input sanitization and output escaping. This makes it possible for...

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...

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-2024-11455

The Include Mastodon Feed plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'include-mastodon-feed' shortcode in all versions up to, and including, 1.9.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible...

CVE-2023-28853

Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Starting in version 2.5.0 and prior to versions 3.5.8, 4.0.4, and 4.1.2, the LDAP query made during login is insecure and the attacker can perform LDAP injection...

CVE-2023-42451

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-rc2, 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-rc...

CVE-2023-42450

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...

CVE-2023-36459

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...

CVE-2023-36461

Mastodon is a free, open-source social network server based on ActivityPub. When performing outgoing HTTP queries, Mastodon sets a timeout on individual read operations. Prior to versions 3.5.9, 4.0.5, and 4.1.3, a malicious server can indefinitely extend the duration of the response through...

CVE-2023-36462

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...

CVE-2023-49952

Mastodon 4.1.x before 4.1.17 and 4.2.x before 4.2.9 allows a bypass of rate limiting via a crafted HTTP request header...

CVE-2023-42452

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-rc2, under certain conditions, attackers can abuse the translation feature to bypass the server-side HTML sanitization, allowing unescaped HTML to...

CVE-2022-48364

The undomarkstatusesassensitive method in app/services/approveappealservice.rb in Mastodon 3.5.x before 3.5.3 does not use the server's representative account, resulting in moderator identity disclosure when a moderator approves the appeal of a user whose status update was marked as sensitive...

CVE-2022-46405

Mastodon through 4.0.2 allows attackers to cause a denial of service large Sidekiq pull queue by creating bot accounts that follow attacker-controlled accounts on certain other servers associated with a wildcard DNS A record, such that there is uncontrolled recursion of attacker-generated message...

CVE-2022-24307

Mastodon before 3.3.2 and 3.4.x before 3.4.6 has incorrect access control because it does not compact incoming signed JSON-LD activities. JSON-LD signing has been supported since version 1.6.0...

CVE-2025-4575

creationtimestamp| type| source ---|---|--- 2025-05-22 13:43:14+00:00| published-proof-of-concept| https://t.me/DarkWebInformerCVEAlerts/17265 2025-05-22 14:25:05+00:00| seen| https://infosec.exchange/users/cR0w/statuses/114551940998291137 2025-05-22 15:28:56+00:00| seen|...