Description

Mastodon is a free, open-source social network server based on ActivityPub. In Mastodon before 4.4.6, 4.3.14, and 4.2.27, the streaming server accepts serving events for public timelines to clients using any valid authentication token, even if those tokens lack the read:statuses scope. This allows OAuth clients without the read scope to subscribe to public channels and receive public timeline events. The impact is limited, as this only affects new public posts published on the public timelines and requires an otherwise valid token, but this may lead to unexpected access to public posts in a limited-federation setting. This issue has been patched in versions 4.4.6, 4.3.14, and 4.2.27. No known workarounds exist.

INFO

Published Date :

2025-10-13T21:04:53.206Z

Last Modified :

2025-10-14T13:53:19.170Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-62176 vulnerability.

Vendors Products
Joinmastodon
  • Mastodon
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-62176.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact