CVE-2025-46340: Improper Input Validation

Misskey is an open source, federated social media platform. Starting in version 12.0.0 and prior to version 2025.4.1, due to an oversight in the validation performed in UrlPreviewService and MkUrlPreview, it is possible for an attacker to inject arbitrary CSS into the MkUrlPreview component...

CVE-2025-46553: Protection Mechanism Failure

@misskey-dev/summaly is a tool for getting a summary of a web page. Starting in version 3.0.1 and prior to version 5.2.1, a logic error in the main summaly function causes the allowRedirects option to never be passed to any plugins, and as a result, isn't enforced. Misskey will follow redirects,...

Misskey 路径遍历漏洞

Misskey is a perpetually free open source federated social media platform from Misskey Open Source. A path traversal vulnerability exists in Misskey versions prior to 12.31.0 through 2025.4.1, which stems from insufficient Mk:api authentication and could lead to unauthorized access to endpoints...

CVE-2025-46559: Improper Limitation of a Pathname to a Restricted Directory

Misskey is an open source, federated social media platform. Starting in version 12.31.0 and prior to version 2025.4.1, missing validation in Mk:api allows malicious AiScript code to access additional endpoints that it isn't designed to have access to. The missing validation allows malicious...

PT-2025-19770

Name of the Vulnerable Software and Affected Versions @misskey-dev/summaly versions 3.0.1 through 5.2.0 Description A logic error in the main summaly function causes the allowRedirects option to never be passed to any plugins, and as a result, isn't enforced. This issue allows Misskey to follow...

PT-2025-19771

Name of the Vulnerable Software and Affected Versions Misskey versions 12.31.0 through 2025.4.0 Description The issue is related to missing validation in Mk:api, which allows malicious AiScript code to access additional endpoints that it isn't designed to have access to. This is achieved by...

PT-2025-19769

Name of the Vulnerable Software and Affected Versions Misskey versions 12.0.0 through 2025.4.0 Description The issue arises from an oversight in validation performed in UrlPreviewService and MkUrlPreview, allowing an attacker to inject arbitrary CSS into the MkUrlPreview component. This can lead ...

CVE-2025-25306

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the specific ActivityPub...

CVE-2025-25306

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the specific ActivityPub...

CVE-2025-25306

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the "id" and "url" fields of ActivityPub objects. An attacker can forge an object where they claim authority in the "url" field even if the specific...

CVE-2025-25306 Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the specific ActivityPub...

CVE-2025-25306 Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the specific ActivityPub...

CVE-2025-25306

Misskey CVE-2025-25306 concerns insufficient validation of the relation between the id and url fields in ActivityPub objects, allowing forging of objects and potential authenticity claims across instances. Affected version is before 2025.2.1, with the issue addressed in 2025.2.1. Concrete technic...

CVE-2025-25306 Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the specific ActivityPub...

CVE-2025-25306: Origin Validation Error

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the specific ActivityPub...

Misskey 安全漏洞

Misskey is a perpetually free open source syndicated social media platform from Misskey Open Source. A security vulnerability exists in Misskey versions prior to 2025.2.1 that stems from insufficient validation of the relationship between the id and url fields of an ActivityPub object, which coul...

PT-2025-10614

Name of the Vulnerable Software and Affected Versions Misskey versions prior to 2025.2.1 Description The issue concerns the validation of the relation between the id and url fields of ActivityPub objects. An attacker can forge an object where they claim authority in the url field even if the...

CVE-2025-24897

Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, due to a lack of CSRF protection and the lack of proper security attributes in the authentication cookies of Bull's dashboard, some of the APIs of bull-board may be...

CVE-2025-24896

Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named token is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary...

CVE-2025-24896

Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named token is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary...