CVE-2025-27157

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{"affected": [{"affectedData": [{"product": "mastodon", "vendor": "mastodon", "versions": [{"status": "affected", "version": ">= 4.2.0, < 4.2.16"}, {"status": "affected", "version": ">= 4.3.0, < 4.3.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*", "matchCriteriaId": "53633344-6503-4CB1-A5AD-3398E3819069", "versionEndExcluding": "4.2.16", "versionStartIncluding": "4.2.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*", "matchCriteriaId": "97C4389D-7EB8-4E02-8DC8-DA1E39429AE9", "versionEndExcluding": "4.3.4", "versionStartIncluding": "4.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}, {"lang": "es", "value": "Mastodon es una plataforma de microblogging federada y alojada por el usuario. A partir de la versi\u00f3n 4.2.0 y antes de las versiones 4.2.16 y 4.3.4, faltan los l\u00edmites de velocidad en `/auth/setup`. Sin esos l\u00edmites de velocidad, un atacante puede crear solicitudes que env\u00eden un correo electr\u00f3nico a direcciones arbitrarias. Las versiones 4.2.16 y 4.3.4 solucionan el problema."}], "id": "CVE-2025-27157", "lastModified": "2026-06-17T09:03:07.113", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-27157", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-02-27T18:04:56.696227Z", "version": "2.0.3"}}]}, "published": "2025-02-27T17:15:16.867", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/mastodon/mastodon/commit/06f879ce9bea195344ac9f71e6799eea500628ec"}, {"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-v39f-c9jj-8w7h"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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