CVE-2025-27157CWE-770

Mastodon's rate-limits are missing on `/auth/setup`

Medium · published February 27, 2025

CVSS v3.1
5.3
EPSS
0%
Percentile
29.6
In the wild
Unconfirmed
What it is

Mastodon is a self-hosted, federated microblogging platform. Starting in version 4.2.0 and prior to versions 4.2.16 and 4.3.4, the rate limits are missing on `/auth/setup`. Without those rate limits, an attacker can craft requests that will send an email to an arbitrary addresses. Versions 4.2.16 and 4.3.4 fix the issue.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00369 · 29.6th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2025-02-27T17:12Z
EPSS history
Timeline
  • 27 FEB 17:12Z
    Mastodon's rate-limits are missing on `/auth/setup`
    cvelistv5