{"id":"CVE-2025-27157","state":"PUBLISHED","title":"Mastodon's rate-limits are missing on `/auth/setup`","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.","publishedAt":"2025-02-27T17:12:39.043Z","updatedAt":"2025-02-27T18:10:00.154Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["mastodon mastodon"],"affected":[{"vendor":"mastodon","product":"mastodon","versions":[{"version":">= 4.2.0, < 4.2.16","status":"affected"},{"version":">= 4.3.0, < 4.3.4","status":"affected"}]}],"references":["https://github.com/mastodon/mastodon/security/advisories/GHSA-v39f-c9jj-8w7h","https://github.com/mastodon/mastodon/commit/06f879ce9bea195344ac9f71e6799eea500628ec"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:08:47.682Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/27xxx/CVE-2025-27157.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-27157","state":"PUBLISHED","datePublished":"2025-02-27T17:12:39.043Z","dateUpdated":"2025-02-27T18:10:00.154Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-02-19T16:30:47.780Z"},"containers":{"cna":{"title":"Mastodon's rate-limits are missing on `/auth/setup`","descriptions":[{"lang":"en","value":"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":[{"vendor":"mastodon","product":"mastodon","versions":[{"version":">= 4.2.0, < 4.2.16","status":"affected"},{"version":">= 4.3.0, < 4.3.4","status":"affected"}]}],"references":[{"url":"https://github.com/mastodon/mastodon/security/advisories/GHSA-v39f-c9jj-8w7h","name":"https://github.com/mastodon/mastodon/security/advisories/GHSA-v39f-c9jj-8w7h","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/mastodon/mastodon/commit/06f879ce9bea195344ac9f71e6799eea500628ec","name":"https://github.com/mastodon/mastodon/commit/06f879ce9bea195344ac9f71e6799eea500628ec","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-02-27T17:12:39.043Z"},"source":{"advisory":"GHSA-v39f-c9jj-8w7h","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-02-27T18:04:56.696227Z","id":"CVE-2025-27157","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-02-27T18:10:00.154Z"}}]}}}