{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T07:02:00.119","vulnerabilities":[{"cve":{"id":"CVE-2026-23996","sourceIdentifier":"security-advisories@github.com","published":"2026-01-21T23:15:53.090","lastModified":"2026-02-27T14:52:40.820","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"FastAPI Api Key provides a backend-agnostic library that provides an API key system. Version 1.1.0 has a timing side-channel vulnerability in verify_key(). The method applied a random delay only on verification failures, allowing an attacker to statistically distinguish valid from invalid API keys by measuring response latencies. With enough repeated requests, an adversary could infer whether a key_id corresponds to a valid key, potentially accelerating brute-force or enumeration attacks. All users relying on verify_key() for API key authentication prior to the fix are affected. Users should upgrade to version 1.1.0 to receive a patch. The patch applies a uniform random delay (min_delay to max_delay) to all responses regardless of outcome, eliminating the timing correlation. Some workarounds are available. Add an application-level fixed delay or random jitter to all authentication responses (success and failure) before the fix is applied and/or use rate limiting to reduce the feasibility of statistical timing attacks."},{"lang":"es","value":"FastAPI Api Key proporciona una librería agnóstica al backend que proporciona un sistema de claves API. La versión 1.1.0 tiene una vulnerabilidad de canal lateral de temporización en verify_key(). El método aplicó un retraso aleatorio solo en fallos de verificación, permitiendo a un atacante distinguir estadísticamente las claves API válidas de las inválidas midiendo las latencias de respuesta. Con suficientes solicitudes repetidas, un adversario podría inferir si un key_id corresponde a una clave válida, acelerando potencialmente los ataques de fuerza bruta o enumeración. Todos los usuarios que dependen de verify_key() para la autenticación de claves API antes de la corrección se ven afectados. Los usuarios deben actualizar a la versión 1.1.0 para recibir un parche. El parche aplica un retraso aleatorio uniforme (min_delay a max_delay) a todas las respuestas independientemente del resultado, eliminando la correlación de temporización. Hay disponibles algunas soluciones alternativas. Añadir un retraso fijo a nivel de aplicación o fluctuación aleatoria a todas las respuestas de autenticación (éxito y fallo) antes de que se aplique la corrección y/o usar la limitación de velocidad para reducir la viabilidad de los ataques de temporización estadísticos."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":3.7,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":1.4}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-208"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:athroniaeth:fastapi_api_key:*:*:*:*:*:python:*:*","versionEndExcluding":"1.1.0","matchCriteriaId":"9E32065D-0671-42EB-8A49-1434ECD4EE54"}]}]}],"references":[{"url":"https://github.com/Athroniaeth/fastapi-api-key/commit/310b2c5c77305f38c63c0b917539a0344071dfd8","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/Athroniaeth/fastapi-api-key/releases/tag/1.1.0","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/Athroniaeth/fastapi-api-key/security/advisories/GHSA-95c6-p277-p87g","source":"security-advisories@github.com","tags":["Mitigation","Patch","Vendor Advisory"]}]}}]}