VULNERABILITY INTELLIGENCE

CVE-2025-27157

CVSS score5.3 MEDIUM
EPSS probability0.37%
CISA KEVNot currently listed
Published2025-02-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-770

Primary references