CVE-2025-27421

{"id": "CVE-2025-27421", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2025-03-03T17:15:15.630", "references": [{"url": "https://github.com/JasonLovesDoggo/abacus/commit/898ff1204e11317cc161240b660e63eed5a72b33", "source": "security-advisories@github.com"}, {"url": "https://github.com/JasonLovesDoggo/abacus/security/advisories/GHSA-vh64-54px-qgf8", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-772"}]}], "descriptions": [{"lang": "en", "value": "Abacus is a highly scalable and stateless counting API. A critical goroutine leak vulnerability has been identified in the Abacus server's Server-Sent Events (SSE) implementation. The issue occurs when clients disconnect from the /stream endpoint, as the server fails to properly clean up resources and terminate associated goroutines. This leads to resource exhaustion where the server continues running but eventually stops accepting new SSE connections while maintaining high memory usage. The vulnerability specifically involves improper channel cleanup in the event handling mechanism, causing goroutines to remain blocked indefinitely. This vulnerability is fixed in 1.4.0."}, {"lang": "es", "value": "Abacus es una API de conteo altamente escalable y sin estado. Se ha identificado una vulnerabilidad cr\u00edtica de fuga de goroutines en la implementaci\u00f3n de eventos enviados por el servidor (SSE) del servidor Abacus. El problema ocurre cuando los clientes se desconectan del endpoint /stream, ya que el servidor no depura adecuadamente los recursos ni termina los goroutines asociados. Esto provoca el agotamiento de los recursos, donde el servidor contin\u00faa ejecut\u00e1ndose pero finalmente deja de aceptar nuevas conexiones SSE mientras mantiene un alto uso de memoria. La vulnerabilidad involucra espec\u00edficamente una limpieza de canal incorrecta en el mecanismo de gesti\u00f3n de eventos, lo que hace que los goroutines permanezcan bloqueados indefinidamente. Esta vulnerabilidad se solucion\u00f3 en 1.4.0."}], "lastModified": "2026-04-15T00:35:42.020", "sourceIdentifier": "security-advisories@github.com"}