{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-25T06:55:50.746","vulnerabilities":[{"cve":{"id":"CVE-2025-69873","sourceIdentifier":"cve@mitre.org","published":"2026-02-11T19:15:50.467","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"ajv (Another JSON Schema Validator) before 8.18.0 is vulnerable to Regular Expression Denial of Service (ReDoS) when the $data option is enabled. The pattern keyword accepts runtime data via JSON Pointer syntax ($data reference), which is passed directly to the JavaScript RegExp() constructor without validation. An attacker can inject a malicious regex pattern (e.g., \"^(a|a)*$\") combined with crafted input to cause catastrophic backtracking. A 31-character payload causes approximately 44 seconds of CPU blocking, with each additional character doubling execution time. This enables complete denial of service with a single HTTP request against any API using ajv with $data: true for dynamic schema validation. This issue is also fixed in version 6.14.0."},{"lang":"es","value":"ajv (Another JSON Schema Validator) hasta la versión 8.17.1 es vulnerable a la denegación de servicio por expresiones regulares (ReDoS) cuando la opción $data está habilitada. La palabra clave 'pattern' acepta datos en tiempo de ejecución a través de la sintaxis JSON Pointer (referencia $data), que se pasa directamente al constructor JavaScript RegExp() sin validación. Un atacante puede inyectar un patrón de expresión regular malicioso (por ejemplo, '^(a|a)*$') combinado con una entrada manipulada para causar un retroceso catastrófico. Una carga útil de 31 caracteres causa aproximadamente 44 segundos de bloqueo de CPU, y cada carácter adicional duplica el tiempo de ejecución. Esto permite una denegación de servicio completa con una única solicitud HTTP contra cualquier API que utilice ajv con $data: true para la validación dinámica de esquemas."}],"metrics":{"cvssMetricV31":[{"source":"cve@mitre.org","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":2.9,"baseSeverity":"LOW","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":1.4,"impactScore":1.4},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"cve@mitre.org","type":"Secondary","description":[{"lang":"en","value":"CWE-1333"}]},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-400"}]}],"references":[{"url":"https://github.com/EthanKim88/ethan-cve-disclosures/blob/main/CVE-2025-69873-ajv-ReDoS.md","source":"cve@mitre.org"},{"url":"https://github.com/advisories/GHSA-2g4f-4pwh-qvx6","source":"cve@mitre.org"},{"url":"https://github.com/ajv-validator/ajv/pull/2588","source":"cve@mitre.org"},{"url":"https://github.com/ajv-validator/ajv/pull/2590","source":"cve@mitre.org"},{"url":"https://github.com/ajv-validator/ajv/releases/tag/v6.14.0","source":"cve@mitre.org"},{"url":"https://github.com/github/advisory-database/pull/6991","source":"cve@mitre.org"}]}}]}