Mastodon quotes control can be bypassed_CVE-2025-62605

4.3 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Description

Mastodon is a free, open-source social network server based on ActivityPub. In Mastodon version 4.4, support for verifiable quote posts with quote controls was added, but it is possible for an attacker to bypass these controls in Mastodon versions prior to 4.4.8 and 4.5.0-beta.2. Mastodon internally treats reblogs as statuses. Since they were not special-treated, an attacker could reblog any post, then quote their reblog, technically quoting themselves, but having the quote feature a preview of the post they did not get authorization for with all of the affordances that would be otherwise denied by the quote controls. This issue has been patched in versions 4.4.8 and 4.5.0-beta.2.

Basic Information

ID CVE-2025-62605

Source GitHub_M

Published Oct 21, 2025 at 16:46

Modified Oct 21, 2025 at 18:00

Affected Product

Vendor mastodon

Product mastodon

Version >= 4.4.0-beta.1, < 4.4.8

Affected Versions mastodon mastodon >= 4.4.0-beta.1, < 4.4.8
mastodon mastodon = 4.5.0-beta.1

CWE Classification

CWE-754

References

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