4.3

CVE-2025-62605

Mastodon quotes control can be bypassed

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Joinmastodon ≫ Mastodon Version >= 4.4.0 < 4.4.8
Joinmastodon ≫ Mastodon Version4.5.0 Updatebeta1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.169
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE-754 Improper Check for Unusual or Exceptional Conditions

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

https://github.com/mastodon/mastodon/security/advisories/GHSA-8h43-rcqj-wpc6
Vendor Advisory
https://github.com/mastodon/mastodon/commit/2dc4552229b55e2e4adaef675e68ed7ae123d78e
Patch
https://github.com/mastodon/mastodon/commit/405a49df44033e7d179f3d44d59fb68a67d54789
Patch
https://github.com/mastodon/mastodon/releases/tag/v4.4.8
Release Notes
https://github.com/mastodon/mastodon/releases/tag/v4.5.0-beta.2
Release Notes