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CVE-2025-27157

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

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
mastodon / mastodonaffected >= 4.2.0, < 4.2.16; affected >= 4.3.0, < 4.3.4

CWE

CWE-770

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.