BIT-MASTODON-2026-72916 Mastodon: SSRF Protection Bypass via IPv4-compatible IPv6 Addresses

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0, PrivateAddressCheck.privateaddress? in app/lib/privateaddresscheck.rb normalized IPv4-mapped IPv6 addresses but did not recognize IPv4-compatible IPv6 addresses with...

BIT-MASTODON-2026-72914 Mastodon: Exhausting data by an unauthenticated request to the admin retention API

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0, the administrative statistics endpoints handled by Api::V1::Admin::MeasuresController and Api::V1::Admin::RetentionController checked authorization only after beginning expensive...

CVE-2026-73038

NodeBB before 4.15.0 contains a stored cross-site scripting vulnerability in the renderEmoji function that fails to escape tag.icon.url and tag.name attributes. Attackers can deliver malicious ActivityPub Create/Note objects with crafted emoji tags to inject arbitrary HTML and JavaScript into...

EUVD-2026-58226

NodeBB before 4.15.0 contains a stored cross-site scripting vulnerability in the renderEmoji function that fails to escape tag.icon.url and tag.name attributes. Attackers can deliver malicious ActivityPub Create/Note objects with crafted emoji tags to inject arbitrary HTML and JavaScript into...

CVE-2026-73038 NodeBB < 4.15.0 Stored XSS via ActivityPub emoji tag.icon.url and tag.name

NodeBB before 4.15.0 contains a stored cross-site scripting vulnerability in the renderEmoji function that fails to escape tag.icon.url and tag.name attributes. Attackers can deliver malicious ActivityPub Create/Note objects with crafted emoji tags to inject arbitrary HTML and JavaScript into...

CVE-2026-73038 NodeBB < 4.15.0 Stored XSS via ActivityPub emoji tag.icon.url and tag.name

NodeBB before 4.15.0 contains a stored cross-site scripting vulnerability in the renderEmoji function that fails to escape tag.icon.url and tag.name attributes. Attackers can deliver malicious ActivityPub Create/Note objects with crafted emoji tags to inject arbitrary HTML and JavaScript into...

CVE-2026-73038

NodeBB before 4.15.0 contains a stored cross-site scripting vulnerability in the renderEmoji function that fails to escape tag.icon.url and tag.name attributes. Attackers can deliver malicious ActivityPub Create/Note objects with crafted emoji tags to inject arbitrary HTML and JavaScript into...

CVE-2026-73038

NodeBB before 4.15.0 contains a stored XSS in the renderEmoji function due to failed escaping of tag.icon.url and tag.name within ActivityPub emoji tags. Attackers can send crafted Create/Note objects to inject HTML/JS into stored post content, leading to code execution in viewers’ browsers. Impa...

CVE-2026-73211

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.1.6, ActorFollowModel.updateScore interpolates the attacker-controlled ActivityPub actor inboxUrl into an SQL query, allowing an unauthenticated remote server to read and write PeerTube database tables, including...

CVE-2026-73090

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without verifying that byActor.url is authorized for the host in videoObject.id, allowing a malicious federated server...

CVE-2026-73211

PeerTube (ActivityPub-federated video platform) pre-8.1.6 is affected by an unauthenticated remote SQL injection in ActorFollowModel.updateScore(), where the attacker-controlled inboxUrl is interpolated into an SQL query. This allows reading and writing of database tables, including oAuthToken.ac...

CVE-2026-73211 PeerTube: Unauthenticated remote SQL injection in ActorFollowModel.updateScore()

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.1.6, ActorFollowModel.updateScore interpolates the attacker-controlled ActivityPub actor inboxUrl into an SQL query, allowing an unauthenticated remote server to read and write PeerTube database tables, including...

CVE-2026-73211 PeerTube: Unauthenticated remote SQL injection in ActorFollowModel.updateScore()

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.1.6, ActorFollowModel.updateScore interpolates the attacker-controlled ActivityPub actor inboxUrl into an SQL query, allowing an unauthenticated remote server to read and write PeerTube database tables, including...

EUVD-2026-56786

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.1.6, ActorFollowModel.updateScore interpolates the attacker-controlled ActivityPub actor inboxUrl into an SQL query, allowing an unauthenticated remote server to read and write PeerTube database tables, including...

EUVD-2026-56784

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without verifying that byActor.url is authorized for the host in videoObject.id, allowing a malicious federated server...

CVE-2026-73090

PeerTube (ActivityPub-fed video platform) has a vulnerability in versions prior to 8.2.2 where processUpdateActivity and processUpdateVideo can accept an Update containing a Video object without verifying byActor.url against the host in videoObject.id. This allows a malicious federated server to ...

CVE-2026-73090 PeerTube: Cross-origin remote video takeover via Update activity

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without verifying that byActor.url is authorized for the host in videoObject.id, allowing a malicious federated server...

CVE-2026-73090 PeerTube: Cross-origin remote video takeover via Update activity

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without verifying that byActor.url is authorized for the host in videoObject.id, allowing a malicious federated server...

CVE-2026-73090 PeerTube: Cross-origin remote video takeover via Update activity

PeerTube is an ActivityPub-federated video streaming platform. Prior to 8.2.2, processUpdateActivity and processUpdateVideo accept an ActivityPub Update containing a Video object without verifying that byActor.url is authorized for the host in videoObject.id, allowing a malicious federated server...

PT-2026-70797

Name of the Vulnerable Software and Affected Versions PeerTube versions prior to 8.2.2 Description PeerTube is an ActivityPub-federated video streaming platform. The processUpdateActivity and processUpdateVideo functions accept an ActivityPub Update containing a Video object without verifying tha...