CVE-2023-43645

OpenFGA is an authorization/permission engine built for developers and inspired by Google Zanzibar. OpenFGA is vulnerable to a denial of service attack when certain Check calls are executed against authorization models that contain circular relationship definitions. When the call is made, it's...

CVE-2026-22246

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon 4.3 added notifications of severed relationships, allowing end-users to inspect the relationships they lost as the result of a moderation action. The code allowing users to download lists of severed relationships...

CVE-2026-22246 Local Mastodon users can enumerate and access severed relationships of every other local user

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon 4.3 added notifications of severed relationships, allowing end-users to inspect the relationships they lost as the result of a moderation action. The code allowing users to download lists of severed relationships...

CVE-2026-22246 Local Mastodon users can enumerate and access severed relationships of every other local user

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon 4.3 added notifications of severed relationships, allowing end-users to inspect the relationships they lost as the result of a moderation action. The code allowing users to download lists of severed relationships...

EUVD-2026-1675

Mastodon is a free, open-source social network server based on ActivityPub. Mastodon 4.3 added notifications of severed relationships, allowing end-users to inspect the relationships they lost as the result of a moderation action. The code allowing users to download lists of severed relationships...

CVE-2026-22246

Mastodon vulnerability (CVE-2026-22246): In 4.3, the severed-relationships notification feature allowed inspecting lost relationships, but the code that downloads lists of severed relationships did not verify the list owner. As a result, any registered local user could enumerate and access the se...

PT-2026-2182

Name of the Vulnerable Software and Affected Versions Mastodon versions 4.3 through 4.3.16 Mastodon versions 4.4 through 4.4.10 Mastodon versions 4.5 through 4.5.3 Description Mastodon is a free, open-source social network server based on ActivityPub. A flaw exists in the code handling the downlo...

GHSA-PM3X-JRHH-QCR7 SpiceDB WriteRelationships fails silently if payload is too big

Impact Users who 1. use the exclusion operator somewhere in their authorization schema 1. have configured their SpiceDB server such that --write-relationships-max-updates-per-call is bigger than 6500 1. issue calls to WriteRelationships with a large enough number of updates that cause the payload...

EUVD-2025-50833

SpiceDB WriteRelationships fails silently if payload is too big...

CVE-2025-64529

A vulnerability has been identified in the WriteRelationships API of SpiceDB, where large relationship-update requests can be silently dropped when the payload exceeds what the underlying datastore permits. This occurs because the server does not always return an error when processing oversized...

CVE-2025-64529

SpiceDB is an open source database system for creating and managing security-critical application permissions. In versions prior to 1.45.2, users who use the exclusion operator somewhere in their authorization schema; have configured their SpiceDB server such that...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WriteRelationships function when the exclusion operator is used in the authorization schema and the server is configured with --write-relationships-max-updates-per-call greater...

CVE-2025-64529

SpiceDB prior to v1.45.2 is affected when the exclusion operator is used and a per-call payload is large due to --write-relationships-max-updates-per-call > 6500. In this scenario, WriteRelationships can return success for a failed operation and produce incorrect permission results if the affe...